Question about 1999 Chevrolet Malibu

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Backfire when starting

When starting the car it backfires through the carburetor

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1 Answer

Cars haven't had carburetors since 1985 some 29 years

To backfire thru the intake, you can't use the car,has to be
a timing or valve problem,probably a mechanical failure

Posted on Mar 24, 2014

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Posted on Jan 02, 2017

jeffbvegas1
  • 520 Answers

SOURCE: car won't start, wait 15 min. will start but kinda backfires.

possible ignition coil pack breaking down...unit cools off them fires plugs again...fuel pressure is a concern also ..possible failing fuel pump

Posted on Jun 25, 2009

  • 14 Answers

SOURCE: my car backfires and will not start.

check the fireing order of your plug wires u most likeley crossed a few wires and put them in the wrong order if u r looking at the front of the vehicle the front 3 cylenders are 2,4,6 starting from the front of the moter and the back 3 cylenders are 1,3,5 and the coil packs should be marked as to wich cylendr they go to if not the startin with the top coil pack the top plug wire pin is num1 and the second is num4 the next coil pack is 5 being the top pin and 2 being the bottem pin on the coil and the last coil pack is top pin cylender 3 and bottem is cylender 6. hope this helps

Posted on Aug 04, 2009

  • 16 Answers

SOURCE: Suddenly started missing badly and backfiring at

could be a mass air flow sensor, or a bad fuel pump.

Posted on Feb 10, 2010

  • 14585 Answers

SOURCE: car died while driving wont start again just wants

Timing belt. this is a major job. If you get a manual you can do it. but follow the manual to the "T". Also the manual will tell you what to check to make 100% sure that it is a timing belt.
Randy

Posted on Jan 21, 2011

  • 4977 Answers

SOURCE: 1993 chevy corsica backfires

backfiring through intake indicates 1 of 2 things that could be going on.1 is fuel pressure lack of fuel.but you say the plugs have fuel on them which to me indicates you have a spark problem.these are known for the ignition modules going bad which are below the igntion coils at the front of the motor.when they go bad they can affect all the coils or just 1 coil.if you have no spark at the plugs then the coils need to be checked for resistance both primary and secondary.you say the car won`t start so i`m guessing their is no spark.if the coils check ok then the module is probably bad.make sure the connections on the ignition module are tight and clean.

Posted on Nov 28, 2011

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1 Answer

I got my carburetor problem fixed but now it runs for a while then starts backfiring it'll shut off let's set for a couple seconds and start right back up can anybody tell me why


That sounds like a fuel/air mixture problem.

Just to confirm .. it is a carburettor, not fuel injection?

As a general rule of thumb (with carburettors..) if it backfires through the exhaust/muffler .. the fuel mixture is too rich.

If it backfires through the carb/air filter, the mixture is too weak.

It could also be a 'sticking' float in the carb.

When an engine is cold the fuel is rich .. lots of fuel .. that's how a choke works.. However, when the engine warms up a rich mixture causes problems. The car may splutter and stall, run sluggish or cut out.

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Backfire out of the intake [carburetor] is too lean of a fuel / air mixture. Backfire out of the exhaust could be too lean, too rich or intermittent spark like a partly fouled spark plug, bad ignition wire, bad points or condenser.

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Love it, has 122,000 miles. New issue: turn the ignition, motor turns but then backfires...do I have a problem with timing or dirty gas?


Depends on if the backfiring is coming out the exhaust or the carburetor, timing is usually the main cause of backfiring. So get the timing checked first, before refueling from a better fuel station with clean fuel. Hope this helps, let me know how you get on.

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Think that our automatic choke went out.Ran rough and was backfiring before it got warmde up.


the car is fuel injection so there is no choke for it has no carburetor.Backfiring is usually the cause by worn timing parts such as the belt. If the backfiring occurts only upon when it first starts up the mass air flow sensor is probably the cause instead

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