Question about 1994 Pontiac Firebird

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Cranks over and back fires

Car won't start, cranks over and backfires

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  • gottmudd69 May 22, 2009

    got gas drove home later car turns over and back fires want start. drove fine up until that point



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Check crank sensor often times they go bad and wont set codes

Posted on Jan 31, 2009

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How do i check the timing

Posted on May 22, 2009

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Timings off

Posted on Jan 24, 2009

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1 Answer

2001 pontiac grand am gt won't start. Cranks normally but no start. Backfired also after a few tries. Fuel pump turns on so I Replaced fuel filter but it still won't start.

The backfire means that it is a timing issue. The problem is most likely the crank shaft sensor. It tells the computer when the engine pistons are in position to fire.

Jun 13, 2014 | Cars & Trucks

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2006 Ford Expedtion 5.4 3V Triton cracking stalls while it's trying to start like maybe it's backfiring, plus it's caused damage to starter.

It sounds like you have a cylinder full of coolant or fuel from a faulty injector, pull the plugs and crank it over, but use extreme caution as if fuel is the issue there could be a fire.

Mar 06, 2014 | Cars & Trucks

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Audi a4 1.8 can't start after top was overhauled is making a weird sound like backfiring the engine dont even move please help camshaft marks was done as well as pulleys and the pistons was also put on...

Back fire is only caused by intake valve being open when a spark plug fires on a cold engine.
Recheck timing marks of cams where the drive sprocket notch of each cam shaft aligns with the cam cap mark at the rear of the head.

It has been known for the crank sprocket to come loose on the crank nose and timing will be off if this is so.

Oct 23, 2013 | 2004 Audi A4

1 Answer

Cranks backfires

That could be a timing issues when it back fires
Why ,no idea,not a question you can guess at as we do here
Could also be a vacuum leak & lean fuel mix
When you say cranks the motor turns over nothing else
Cranking has nothing to do with the motor starting or running
You have a no start & back fire as I gather

Jul 26, 2013 | GMC Sonoma Cars & Trucks

1 Answer

Engine about to start and there is back fire as well

old post,
but here goes....
did you do the tune up... if not the spark plugs are no good.
back fire to exhaust tail end ,
backfire to air cleaner.
which end.?

Feb 11, 2013 | 2000 Suzuki Vitara

1 Answer

Have a 1999 Kia Sportage that won't start. Have changed Head gasket and set timing. Have also check to see if getting spark and am getting spark. Will crank but won't start.

dose it backfire when you crank it over. if it dose your timing is off. If it dosent backfire when you crank it then look at all your wires and make shur you pulged ever thing in. and if you have one ground not hooked up that can cause a no start do you have fuel?
let me know and we will help more if needed

stockam auto

Jul 11, 2011 | 1999 Kia Sportage

1 Answer

Installed a timing belt and all marks line up but still won`t seems to backfire and snuff.any answer?

your camshaft is a half round out. turn the crank till it is at top dead center then take your chain off and turn the camshaft a half roud to line up with crank. then put back together and start

Jul 29, 2010 | 2001 Kia Sportage

1 Answer

3.5 will not start just back fires serverly

Get new belt installed & all aligned as it should be & do compression test before going any further to make sure. If good compression there in all cylinders, you probably dodged ( no pun intended) a bullet. Not 100% sure whether that is an interference engine or not, but will see if I can find out. By the sounds of the backfiring description, I'd be tempted to say you still have good compression. here's to hoping. Make sure when you get it back running that you keep a close eye on oil & coolant levels for a while just in case the backfiring cause some gaskets or seals to blow. Watch for difference between cylinders when doing compression test.

Dec 14, 2008 | 1997 Dodge Intrepid

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