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The timing may be too far advanced, check against manufacturer's recommendation.

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Q: What causes backfires after starting a fuel injection engine?
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What are other causes that make spark plugs to foul very fast?

pushing a gas pedal on a fuel injection engine- (while starting) you just don;t push the gas pedal on a fuel injection engine.


My mini chopper wont start up...What causes a 49.5cc 4 stroke engine to backfire when starting?

If your engine backfires when trying to start and the valve timing is correct, then it could be electronic ignition unit or the pick up that causes the spark to occur with wrong timing.


How do you prevent fuel injection flooding?

You can prevent fuel injection flooding by not pumping the gas pedal when trying to start the engine. Fuel injection systems do not need any additional fuel when starting the engine.


Does the f350 ford 460 engine have fuel injection?

Starting with the 1988 model it did


How do you stop your 2003 Mitsubishi lancer from backfiring?

Exhaust system backfires occur in engines that have an emission system malfunction, like an air injection system diverter valve problem, an exhaust leak, or when the catalytic converter has been removed. In some high-performance vehicles, when a driver shifts up and lets off the accelerator, the engine has a moment of running rich. This causes an incomplete burn which causes the fumes to explode in the exhaust system along with an audible clacking sound. However this condition is a result of working smog equipment, and is unlikely to cause any damage.A fuel injected engine may backfire if an intake leak is present (causing the engine to run lean), or a fuel injection component such as an air-flow sensor is defective.Common causes of backfires are:Poor or unregulated engine timing is often a cause of intake backfires, but can also be responsible for exhaust backfiresImproper wiring in the ignition can also lead to timing issues and backfiresLow fuel pressure, clogged fuel filters, and weak fuel pumps could cause a severe lean air-to-fuel ratio during fuel injectionMissing or damaged catalytic converter can result in backfires out the tailpipeCourtesy of: WikiI dont know that much about cars, but when my friends Mustang backfired, there was a timing issue in his engine which also affected his speedometer! But his car is a 1980! LOL! So I would get it looked at!


How can you stop a kohler engine from backfiring?

if it only backfires when shutting off, usually this means its getting to much gas!! if it backfires will running adjust carburater.


What happens if you race the engine while starting it?

well , it depends on your engine type .. If you are using an older vehicle (an engine without MPF-i (fuel injection)) , nothing will happen , the car will just burst to a start , that is all.. But if you are using an engine with MPFi/Fuel injection , it may damage your fuel pump , so it is recommended that you start the vehicle on idle. unless if your car is not starting , you may need to step on the accelerator just a bit .. note : If you are having a K-Series Engine , The engine may quickly jump to 6000 rpm if you raise the engine while starting , and that may damage your emission and fuel injection systems


Has compression of 95 lbs backfires when you use starting fluid?

It sounds like the timing is off. Check to make sure that the engine didn't jump time or break the timing belt.


What causes loud noises from engine when first starting then goes away when driving?

not enough oil in the engine.


Why does my Peugeot 106 cut out?

does it happen when driving, just after starting, when hot, when cold, carbed engine, injection engine? need more details to be able to help you mate.


Inboard engine backfires what will prevent the ignition of gasoline fumes?

backfire flame arrestor


What will prevent the ignition of gasoline vapors if an inboard engine backfires?

Backfire flame arrestor