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chances your spark plug wires in wrong order happenned to me on my 92 i was given different firing orders be specific with whomever if its distributor or coil pack

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Q: What would cause my 91 Ford Aerostar to idle fast backfire and run fuel rich exhaust and how do I fix it?
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What would cause 1986 454 to backfire through the exhaust while idling?

Plug wires installed incorrectly. Click the link.


What would cause a 1979 VW Beetle to backfire?

There are two things that can cause it. The most likely one is timing too retarded. The other is an exhaust leak. Since your car is fuel injected, you probably have the Exhaust Gas Recirculation system hooked up, and this is where most of the backfire-causing exhaust leaks come from. So it's probably timing.


Why would exhaust gas come out of your carburetor?

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Why does a car backfire?

A car backfires because unburned fuel is getting to the muffler. The heat of the exhause system causes the fuel to combust, thus a backfire. I have just been told that the rubber on my exhaust has split - could this be why the car would backfire? I have heard something about air getting into the exhaust could cause a backfire? back fire can be caused by different faults. first is to much fuel because of worn carburetter, or wrong adjusments on carburetter. choke sticking will cause backfire. timing be out of adjustment will cause backfire exhaust leak can cause backfire. bad spark plugs, or plug leads , distributer cap worn of cracked will cause backfire as for fuel in muffler, if it combusted in muffler , the muffler would split open it is not that. and i dont know of any rubber on an exhaust that would take the heat aexhaust manifold gaskets could be problem but if they were rubber they would melt \ is it good or bad to have backfire It can also be done with intentional modification, such as done in ''Keeping Up Appearances'' British sitcom. A fuel line and an oxidizer line are added to the muffler with a manual rubber bulb pump added to the line as the ''backfire button.'' At a point before entering the muffler, the lines have a pair of backflow valves to prevent the flame from racing into the mixture tanks. Squeezing the bulbs dispense a mixture of pure alcohol and an oxidizer into the muffler to create a reaction. For Onslow's car in the TV programme, copier toner was squirted in the tailpipe for a heavy soot effect on the backfire command. Having a car backfire can shake off any parts that aren't bolted completely, and can cause the engine to stall because the pressure of the backfire can temporarily disrupt the exhaust release from the engine. Besides, it would spook horses, cows, or anyone not used to loud noises. So having the car backfire down a Harlem road won't have the same effect, as a car backfiring down a rural city road.


Would no catalytic converter cause backfire?

Having no catalytic converter installed is illegal and can cause a myriad of problems. Probably not a backfire though.


What would cause a 1973 Chevy Nova to all of the sudden start to backfire through the exhaust when you let off the gas?

its running too rich down tune youre carb


What would cause backfire and exhaust smoke?

It could be timing is off. Need more info. Is it Fuel injected or Carburated? Exhaust smoke? Is it black? Black indicates alot of carbon built up. May mean the fuel is burning way to rich.


What would cause a 2000 Chevrolet C7500 running on propane to backfire and die?

There are several things that can cause your 2000 Chevrolet to backfire and die. The most common cause is a plugged catalytic converter.


What causes backfire through exhaust on 1986 GMC only on passenger side with dual exhaust?

I would suspect the spark plug wires are installed incorrectly on the passenger side.


What would cause a 1995 Ford Aerostar to idle rough?

the radiotor or the cams


What would cause gas in the exhaust on a motorcycle?

Exhaust of an engine is a gas.


Would adding oil treatment to a car cause it to backfire?

Backfiring is a timing issue.