Just recently I was having a driving problem it would stutter and die at 2000 rpm intermittently my first thought and diagnosis was a faulty maf with this repaired the car ran great for about a month then it wouldnt go over idle with out stalling out my fuel pressure was a little strange so I replaced my fuel pressure regulator but. Very lightly press the gas and it will rev to about 3-4000 rpm. If you tune the idle-feed restrictors too lean, the engine will most likely suffer from an off-idle lean stumble as an early indicator that you’ve gone. Enjoy :)>:. We towed the car home. What cannot get out blocks what needs to get in. So this year is the first time I ever tried to fix small engines without any knowledge of what I was doing. My car is making loud knocking noises at idle. This stops the flow of fuel to the carburetor causing the engine to stall. Dieseling or engine run-on is a condition that can occur in spark-plug-ignited, gasoline powered internal combustion engines, whereby the engine keeps running for a short period after being turned off, due to the engine kicking back upon shutdown, drawing fuel through the carburetor, into the engine and igniting it without a spark. Check the fuel supply to your engine. When I start to accelerate (while not at operating. For small engines, spark plugs typically need to be replaced every season or after 25 hours of use. I've tried holding the rev's up and pumping the gas when its about to turn off but that hasn't helped. Apply - Answered by a verified Technician. I have a problem I have a 2008 BMS heritage Znen150. Won't pop up any codes either. After about 2 minutes, engine still not rev, but truck. 5 24v idles fine but won't go over 1200 rpm I checked the codes you posted against the code book I have (came with my microtuner) and they all match with the exception of PO168, my book states "PO168 decreased engine performance due to high injection pump fuel temperature. Chainsaw will idle but won't rev. Turn the engine over by hand a few times to blow the carbon granules out of the engine. " I have about twenty small engines out in my barn of all varieties and my least favorite are the two Hondas. but engine would not start. Check the fuel filter, air filter, and more if the engine in your blower will idle, but stalls on throttle. com) -- Diesel engines, long confined to trucks and ships, are garnering more interest for their fuel efficiency and reduced carbon dioxide emissions, relative to gasoline engines. Accelerator Pump Faulty or Out of Adjustment: If the engine stumbles when you open the throttle, the problem could lie with the accelerator pump, or it could mean that either the main jet or the idle just is too small. We make fixing things easier!. It has greater torque output, on the order of 500 lb-ft, compared to the common 200 lb-ft that many V-8 engines produce. 5 Potential Jet Ski Repair Solutions for Engine Problems. Everything has to be on-spec for proper performance. is this a small two cycle? there could be a myriad of things to look at, well not quite that many, ha ha. I am asking it here becasue the knowledge of you guys I know is great and I bet you could give me some answers. If not, check the wiring to and from the starter for a loose connection. Re: Motor will not accelerate under load. How do we adjust an engine’s idle speed? In the past, adjusting an engine’s idle speed was easy. It was tuned up 2 months ago changed fuel filter and when we took it out a lot of air came out instead of gas. The bike hasnt been running to my knowledge for 4-5 months. I've heard people write that this is a normal cold-engine idle speed, but it wasn't like that when it was new, and I don't like the car's driving characteristics from 0 to the first couple of gear shifts. The RPMs are staying right at 700 and the car isn't over heating. Rough idle caused by carburetor problems. Shift at dead idle speed. Your car won’t accelerate quickly. " I have about twenty small engines out in my barn of all varieties and my least favorite are the two Hondas. If the engine you are working on is equipped with a power valve (no metering rods), the main jet size is what determines the A/F mixture that will be delivered to the engine at light-load/cruise speeds. Lets have a look at the options … Continue reading Go Kart Engines: Predator 212cc Performance →. The first was a mantis tiller that I asked about in here that I got working. Check to make sure that the pump delivery tube (in the very top of the carburettor throat) is pointed directly down the. Use the Idle screw to adjust as needed. i have a 2003 sovereign mower with a briggs and stratton 50 engine. Still needing help with 4x2 gator running but wont accelerate John Deere Gator John Deere Gator It starts, runs, but only at idle with full pressed fuel pedal. But it won't rev up without bogging! Symptoms: Engine starts perfectly, idles greatpress the gas more than 5-10% and it wants to bog down/ die. Skip to the section that applies to you: Engine Idle Is Too Low Or Stalls or Engine Idle Is Too High. This setting can be easily reset using a butterknife or similar tool. Here is what I did so far. Test compression to ensure all cyls are healthy. 1999 ford ranger xlt everything is in good conditions except the acceleration I step on the gas literally all the way to the floor, the engine forces it self, but the damn truck will only accelerate like 5mph in 10 secondsthis is when im already going 40+ mph. I also checked the crankshaft sensor, which seemed to be okay. Engine starts, idles, but dies with acceleration starts runs but won`t take gas,I`d check the diaphram in carb. If it hunts like that it could be a lot of things but most common would be. If that’s okay, check whether the electrical spark is getting to your spark plugs. I was mowing yesterday when i heard a mechanical tinkling sound from the mower works, and now the mower will start, idle, but will not accelerate to cutting speed. I may need to to up the idle a little. See the reason I rebuilt the carbs the first time is that I could not open the throttle without killing out the motor. 2 MPFI engine. I have a 1989 Capri Bayliner with a 1989 Force 125. It means THAT CYLINDER is too lean, and it doesn’t have enough gas to run properly. Make small, incremental changes when adjusting this table as. 3) Choke pull off setting incorrect. com Community Forums. I'm not a certified mechanic in the least. My engine wont idle I've had seven trips to sea with it since its restoration but a new problem is becoming a serious nuisance. Hi my ryobi rpt3000 line trimmer,wont rev up. " This means emptying the fuel tank and then restarting and letting the unit run until all the fuel is consumed and the engine stops. 7 bogs/backfires when I give it gas. Pull off on the side of the road or into a rest stop but do not idle for more than a few seconds. Small Business Small Business Chainsaw Won't Accelerate (Zama Carb) on many engines with this same probem you can simply just open the the high speed jet 1/2. Mine idles rough, but it will start and idle. when using the other day I put a limb in it the engine bogged down and never came back. When it is barley idling and won't accelerate prior to. When your engine starts and stalls, it is often due to standard maintenance problems. Squeezing all you need to know into one chapter isn’t possible and this forces me to make statements I don’t have the room to back up with. To make up for this, the fuel cap uses a small vent to allow air to enter the tank. com) -- Diesel engines, long confined to trucks and ships, are garnering more interest for their fuel efficiency and reduced carbon dioxide emissions, relative to gasoline engines. The idle mixture screw feeds fuel to both of these ports. Danbury Competition Engines, Danbury, CT 203-748-7356 - Joe Lapine - A local (to us) engine builder who specializes in Ford small block and 390/428 engines. Remember to follow all safety precautions before starting any work on your engine. is this a small two cycle? there could be a myriad of things to look at, well not quite that many, ha ha. The high pressure side typically runs at about 500 psi at idle, 1,200 psi at about 3,300 rpm and about 3,600 psi under full-load acceleration. Revs to about 1200 rpm and then oscillates down and back up to 1200. The most iconic crawfish boat engine used is the hydraulic small engine type. Once engine is warmed up been driving for awhile. There is often a backfire or two when this happens. By B-Hard, so removed the carb & found a small "lump" of residue blocking the main jet. If the air coming off the radiator isn’t hot enough to make the clutch engage, the fan will not be driven. Improperly set idle mixture screws are often the reason for carburetor symptoms such as hesitation, rough idle, backfire, stalling, hard starting, engine surge, and more. No check engine light and it will idle on. It might be fine at idle but could buck and jerk randomly when the engine is under load. This must be replaced or your engine will run at excessive speeds and may cause internal failure of the engine. If part of the A/C system isn't working right - worn out compressor, low freon charge, who knows - this power requirement may be even greater. Pilot or idle jet system. If you attempt to start it up too many times, this can also flood the engine of the grass line trimmer. Have a 97 dodge ram van 3500 with 5. It is often said that for an engine to run you need fuel, air, and spark. I've tried holding the rev's up and pumping the gas when its about to turn off but that hasn't helped. Starts great and ildes great and will even run great at low RPM, but when you try to accelerate the engine falls flat on it's face. The unfortunate truth is that engine noises can mean anything from a simple quick-fix, to a complete engine overhaul that may not be worth the money if your car has some gnarls in its beard. Turn the key switch off, or. This chart is to be used as a guideline for troubleshooting engine problems. Since it is the TPS that tells the engine's ECU that you are idle, if that setting is off, setting timing can be difficult, since insertion of the timing check jumper won't have any affect on the engine. The vehicle just will not accelerate to a higher power when attempting to drive away, it stalls but engine keeps running. Right now WOT is 1500 rpm but the pressure was steady while it was running and when i tried to rev the motor. Typically (hopefully!) your engine probably purrs like a kitten, but turn down your music and take a listen. Toyota Camry: Why Won't My Car Accelerate? Your Camry is barely moving, even with the pedal pushed to the floor! What the heck just happened? Continue reading for a few places to start your diagnostic. So I had the sensor replaced and it did not resolve the issue, but the check engine light went out. A couple days ago, it started making a weird noise after starting the engine but it would go away when I got on the freeway. They're also known for their pulling power and rugged durability. I've heard people write that this is a normal cold-engine idle speed, but it wasn't like that when it was new, and I don't like the car's driving characteristics from 0 to the first couple of gear shifts. This ensures that the engine won't seize up after a lot of use during the warmer months. So I had the sensor replaced and it did not resolve the issue, but the check engine light went out. Engine Stalling, Surging or Running Rough. As I slowly increase curb idle to keep engine from stalling, opening throttle after every 1/8 turn, it will go from barely running to about 2000 rpm & stay there for about a minute or so & then idle down on it's own & start to die. Koei Saga, Toyota’s boss of advanced technology (including electric cars), goes further: “In my personal view, I think we will never abandon the internal-combustion engine. By B-Hard, so removed the carb & found a small "lump" of residue blocking the main jet. This will remove all the old gas from your system, but won't get rid of any deposits that gummed up the jets over the winter. Average repair cost is $180 at 78,600 miles. Engine will start and idle smoothly but as soon as you depress throttle it bogs down and won't rev up. Once the engine has been shut off, the gasoline is heated by the latent heat of the engine, and percolates the fuel from the bowl into the throttle area, forming a mixture that is too rich to fire. A set of wires 12 years old worked, but a year later, won't? I don't think it's the wires, because the engine would misfire at an idle, which isn't your problem. I can start the car, but when I push on the gas pedal, nothing happens. Compression is strong. cold engine, throttle pulled wide open. what changes would need to be made for a smaller engine? say like a 350 or a 327? the problem i've run into with my stock msd can, is not being able to get the idle down in park/neutral (1100-1200 after adjusting the idle screw, idle mixture has NO effect) and not being able to get it up in gear (hovers around 500, BADLY chugging the engine. But now it won't accelerate at all. I now have two small gasoline engines that have the same problem, and I'm wondering if y'all have any thoughts on what's causing this. It seems that the cvt transmission has something to do with it. Prevent stalling problems before they start with a tune-up kit. Diesel Turbo whistle question. 2006 dodge 1500 5. I hope that is all it takes. For all 616 617 Diesel Engines 1974 to 1984 Why Won't My Diesel Mercedes Start? by Kent Bergsma Mercedessource is NOT affiliated, sponsored nor authorized by. The fuel filter works by cleaning out impurities in the gasoline. And the absence of holes midway allows full flow of fuel through the idle circuit, which when used in a wrong carburetor, may cause the engine to idle too rich. The carb idles fine while warming up, but when choke is open & engine is hot, still cannot set curb idle. A few small leaks won't keep your car from starting but large leaks, or too many small ones, may be too much. Making a diagnosis can be hard, especially when you don't have much experience in car repair and the source of the problem can be in one of several systems. On some carbs, like Mikuni there is an air jet too. The engine now has less than 100 miles on it. It just bogs and finally dies out. Check to make sure that the pump delivery tube (in the very top of the carburettor throat) is pointed directly down the. Maximum power of 1 KW @ 7000 RPM and a maximum torque of 1. What cannot get out blocks what needs to get in. The only thing I'm noticing is that if you accelerate slowly it works fine, but on a quick acceleration from idle the engine falters a little, then catches. Rebuilding or replacing the carburetor won't eliminate this problem if stalling is ignition related or due to a weak fuel pump, plugged fuel filter or fuel line, or bad gas (too much water or alcohol). All cars made in 1996 and after are equipped with an OBDII interface. Toyota camry 2003 , 2azfe - 2. If turbo is sticky, it might loosen up as engine oil temp rises. This ensures that the engine won't seize up after a lot of use during the warmer months. If using an engine stand, use caution that it doesn't tip. In this article, we will discuss the systems and components that make small engines work. Engine will start and idle smoothly but as soon as you depress throttle it bogs down and won't rev up. For a list of more parts and to better identify the problem with your blower, follow our repair guide. Before you start tearing things apart, if it will idle, dump out the fuel thats in it and create a mixture of 1/2 Chevron Techron, (available at all autoparts stores and wally, it's in the black container) and 1/2 fuel mix enough for the engine to idle for 20-30 minutes, DO NOT REV THE ENGINE or bad stuff can happen, when it is finished replace. Checking your vehicle's fluid levels is always a good idea to maintain the overall longevity of the engine. Battery remained disconnected for extended period. If I dip the clutch and blip the throttle, it revs up, re-engage the clutch it will then pull fine as if nothing is wrong. Pull the carb. if you havent already, check the simple things, i would make sure plugs and wires are all good, make sure plugs are all in good shape and gapped to. Use your safety lanyard chord. 9 Cummins and the sensor is on the right hand upper side of the rear flywheel housing ( about 2:00 O'clock. msd 6al with msd distributor new wires and plugs My fj40 ran great last week I installed front and rear lockers drove it to the gas station and filled with regular gas (i usually use premium) and now it wont idle below 1100 rpm with out dying. The engine won't start if any of these elements are missing, but. Solution - lean low-speed needle 1/8 turn and try again. and go to restart warm, it catches starts for a flick of a second, drops to a stall, or sometimes will catch its self and start. • Transmission not locking up (or. Your car engine is making unnatural noises and you don't have the slightest idea what it could be. 6 Nm @ 5500 RPM. If the main fuel screw when opened does nothing to change the situation, the float may need to be reset or the jets are dirty. I am asking it here becasue the knowledge of you guys I know is great and I bet you could give me some answers. Revs to about 1200 rpm and then oscillates down and back up to 1200. What you must know is that an engine is designed in such a way to cancel out vibrations so that you and your passengers can have a smooth ride. As soon as I try to give it a little more juice or jab the throttle, the falls on its face, sometimes revving back up for a second before bogging down again. Where should I set the timing on my performance engine? There really is no specific initial timing specs for any performance engine. Is your car losing power? In most cases, a loss of engine power is related to a mechanical failure in your vehicle. Set at midpoint between rich and lean. This is because a high level takes less vacuum to suck fuel into the engine and a low level takes more vacuum to do the same. Why is the engine bogging under acceleration? I recently managed to get the moped running properly, albeit for only a short time. generally these engines are very trustworthy. If you have a “Check Engine" light, your car's computer is storing information about what problem was detected. However, jet ski sales reps would bring great benefit to their customers by sharing the proper maintenance guidelines for watercraft units purchased by those seeking the feel of speed on the lakes. Changed plugs oil, whole throttle body. If your car has a rough idle, it may be because your idle speed setting is incorrect. But when I press on the gas pedal it doesn't accelerate or rev up. The most common of all C5 Corvette climate control problems is compressor failure due to leakage. Overview: There are quite a few differences in the operation of 2-stroke engines compared to 4-stroke engines (which were covered on the Basic Small Engine Repair page). When the idle mixture (air bypass) adjustment is closed, the air valve will open farther at cranking. If the air coming off the radiator isn’t hot enough to make the clutch engage, the fan will not be driven. 5 small changes to maximize your car’s fuel. The engine’s idle speed is controlled by how much air is allowed to bypass the throttle via the idle bypass circuit in the throttle body. Each needle may have an affect on the others. What you must know is that an engine is designed in such a way to cancel out vibrations so that you and your passengers can have a smooth ride. This still won't completely dissolve those deposits, but it'll certainly help. " I have about twenty small engines out in my barn of all varieties and my least favorite are the two Hondas. There are three types of engines on the market to choose from. The engine will not idle with the mixture screws out 1. If using an engine stand, use caution that it doesn't tip. I have checked the following-TPS- adjusted and functioning. Either way is a problem. Why Pats Small Engine Plus for All Your Kawasaki Engines and Engine Parts? Best Price Guaranteed on The Web - For more info - Click Here Fast Flat Rate $7. If it "sucks air" and won't accelerate or quits (sounds like BWAAaaah when the throttle is opened), the idle mixture is lean and should be richened slightly. Re: Cart idles but will not accelerate It is not, and does not idle. Fortunately, it's easy to adjust the idle mixture with a simple screwdriver and a quality vacuum gauge. Lawn Care After a Flood of Rain Posted July 14, 2017 by Kyle Elgin 1 Comment. When 2 stroke engine troubleshooting and the engine is flooded, you want to spin the engine over fast with the throttle wide open several times. It controls the idle no matter what state the engine is in, hot or cold. unfitgeezer. Use your safety lanyard chord. even moving the idle screw a HAIR belowim talking maybe 1/8th of an inch of turnthe engine sputters and starts to die. Two-cycle engines on mowers such as the Lawn-Boy 10201 are controlled by a small screw on the side of the carburetor, or the idle-speed screw. Outboard engines, as with any internal combustion engine, require air, fuel and spark to maintain adequate combustion throughout the power band. The 2006 Ford Expedition has 5 problems reported for engine won't accelerate when fail safe light comes on. Where should I set the timing on my performance engine? There really is no specific initial timing specs for any performance engine. It is often said that for an engine to run you need fuel, air, and spark. Using the choke to keep the engine running causes the carburetor to supply fuel to the air stream through the main nozzle, not through the idle circuit(s). Honda Engine starts but won't rev up - tip Showing 1-4 of 4 messages. I saw a small box bolted onto the engine (enclosed, about 1. Is your lawn looking like a swamp all of a sudden?. The knock sensors are under the intake manifold. Abnormal combustion, more commonly known as knock or detonation, has been the limiting factor in internal combustion engine power generation since the discovery of the otto cycle itself. Use the strategies outlined in this guide. Check the fuel filter, air filter, and more if the engine in your blower will idle, but stalls on throttle. Also it seems to want to start going faster if I throttle up slowly but then right away goes back to idle and if I continue to idle in gear for a while it seems to go slower and slower. This is a less harder problem to find for if you can find the compressor, you can visually inspect the compressor for fluid leakage. Q: When I use my car it idles at 700 and then stalls when used for 5 min but there are no check engine lights. It can be an easy fix or costly repair. Just accelerate up to highway speeds and hold it for a few miles. The misfire can be serious enough to cause noticeable vibration in the cabin, or even backfires. Runs fine when cold. If the engine is loose, find a way to hold it down. it will idle, but when I press accelerator, it. There are three types of engines on the market to choose from. The engine cranks over but won’t start: You may be out of fuel, or the fuel isn’t getting to your engine. As soon as I let off the throttle, it eases back into a smooth idle again. First thought was to pop the hood and look and listen for vacuum leaks which we did as this would be the most common cause of this idle and surging condition. The idle is obviously what gives you fuel during idle. RACQ technical guru and Suzuki Bandit rider Steve Spalding advises riders not to idle their engines any longer than is necessary. I am leaning to. Insufficient fuel supply. I saw a small box bolted onto the engine (enclosed, about 1. just when you give it gas it dies? and yes the engine cuts out if you rev the car in park. What do you think it is? This happens in park neutral and in gear. The engine will not idle with the mixture screws out 1. Is this also a problem with the carbs?. How do we adjust the engine idle speed to correct the problem? The answer is a bit more complex than most folks realize. Here and YouTube. I have a 2002 dodge caravan sport with the 3. An engine is an air pump. The Causes of Internal Engine Knock, and How to Eliminate it. Engine hunts (at idle or high speed) Carburetor Leaks; Examine idle and main mixture adjustment screws and O-Rings for cracks and damage. Re: LOW ROUGH IDLE, Sometimes dies! I had all the same crap, did all the same stuff everyone else above did, made some gains however the bottom line for my truck was a Throttle Positioning Sensor. Carb and air. ur egr valve if faulty and closed,wont hurt ur car, it just wont pass ur smog test and will be bad for the inviorment not to mention a very cold start in the mourning, meaning ur egr valve is prob faulty and u dont even know it, but if its stuck open due to carbon build up, ur idle will be rough,but still be good at acceleration, its easy to. If turbo is sticky, it might loosen up as engine oil temp rises. Once I used our small 2-cycle garden tiller. Normally, shops stock them in round sizes of “5”s, like 50, 55, 60, etc. So I took my service manual and started following the troubleshoot steps. Solution - lean low-speed needle 1/8 turn and try again. Rough idle, stalls, when engine warm. '91 Chevy Truck wont idle anymore!! I gave the truck to my son who wanted to rebuild the engine. An improper spark plug gap could lead to engine knocking and poor performance. Engine starts, idles, but dies with acceleration starts runs but won`t take gas,I`d check the diaphram in carb. Engine will not accelerate, lacks power, or dies under a load Cause 1 Air Filter Dirty 2 Spark Plug fouled 3 Carb requires adjustment 4 Carbon buildup on muffler screen 5 Compression low I dont believe it is 1, 2 or 4. I'm not an outboard mechanic but I know a bit about small engines and I. My 97 Gasser Idles but the engine won't accelerate. (Page 1 of 2). , as examples) typically feature a dedicated high-pressure oil system that operates the fuel injectors. generally these engines are very trustworthy. They're also known for their pulling power and rugged durability. Many Journal readers rely solely on horse or mule power. 2 ounces of oil. Any help is greatly appreciated. engine somewhere. My car is making loud knocking noises at idle. The "small solenoid" you are talking about is the Idle Air Control (IAC) valve. Spark comes from the ignition system. I hate to waste people's time on idle speculation, there's a little more. I hesitate to buy a whole new wiring harness at this point. I then apply a small amount of throttle and it bogs down. I just bought my Cruze and the check engine light was on due to needing a mass air flow sensor. If only nailing down the causes of power loss were as simple as a tuber in the tailpipe, we wouldn't make such a hash out of diagnosing them. If turbo is too tight to spin, there will be no air flow out of the hose. If your engine starts but won't stay running, you want to make an accurate diagnosis as soon as possible. Here's are 6 signs to look for. For all 616 617 Diesel Engines 1974 to 1984 Why Won't My Diesel Mercedes Start? by Kent Bergsma Mercedessource is NOT affiliated, sponsored nor authorized by. (Page 1 of 2). Your main jet is either to big or to small. Engine will run, but it surges, hunts for a constant RPM 1. A light-duty three wheeled engine stand won't do it if a long breaker bar is going to be used to turn the crank. Here's a tip for those who might be frustrated by an engine that seems to run great at idle,but either refuses to rev up when the throttle is opened,or sputters and spits and runs erratically if you do happen to coax it above idle. The "Check Engine" light was on so I checked codes. Why Does My Car Lose Power?. The pilot serves as a gradual step as the circuits trade off from the tiny idle circuit to the relatively large main. If using an engine stand, use caution that it doesn't tip. my little husky screw driver set feat in this video https://amzn. As soon as I try to give it a little more juice or jab the throttle, the falls on its face, sometimes revving back up for a second before bogging down again. A very slight up-hill grade is OK but down hill grades won't work for this since you want the engine to be working a small amount, not coasting. Quick Links Solving Automotive Idle Problems Home Honda Idle Issues, Hunting Idle Idle Speech Idle Speech, Page 2 I get a TON of questions about Honda idle problems so I've put together this article to help you should you run into a rough idle on your Honda. If idle speed does not drop, adjust as below. If your car has a rough idle, it may be because your idle speed setting is incorrect. this time my car wont accelerate. Diagnosing Light-Duty Diesels Download PDF. Normal engine maintenance schedule followed. It sounds like a quiet treadmill, especially when I accelerate or have it idling. Changed all fuel lines,cleaned both carbs and the jets also. Some causes are harmless, while others can. This is a copy/paste of a thread I posted on TVP a few years ago. Repowering and Replacement engines Questions and Answers: Back to top. Black fuel lines will degrade from the inside out. This sound usually means a dead battery. The idle is stable and it revs cleanly when the car is out of gear with no load. Customer benefits include:. " I have about twenty small engines out in my barn of all varieties and my least favorite are the two Hondas. Well, I'm 2 for 3. This jet along with the idle mix. An engine can stall if the idle speed is too low, the fuel mixture is too lean, won't burn, stops flowing or the ignition system runs out of spark. I'd look at some simple stuff first, like the spark plug - which might fire OK at idle, but misfires under throttle?. If your snow blower won't start despite success last season, the problem is probably small enough to repair yourself. Insufficient fuel supply. This chart is to be used as a guideline for troubleshooting engine problems. If it's not getting enough oil at idle, something is wrong. Dies when throttle applied. Why your car won't accelerate when you step on the gas pedal can mean a lot of things. High pitch propellers = Beginning your drive in fifth gear. car won't accelerate This is a discussion on car won't accelerate within the LT1 forums, part of the Vehicle Specific category; It feels like my traction control is stuck on and won't let me push the pedal. When I put the throttle on high it seems just about 1/2 speed, and as I decrease the speed on the throttle the motor revs stays the same until I get to about 1/2 speed, then it decreases and. If engine will not accelerate.