Question about 1997 Buick LeSabre

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Missfire # 4 cyl code

I replaced everything it says to also the fuel injector wich fixed it for a couple of months then it popped again checked for vac leaks couldnt find any so i reset the code and the car runs fine for a bit then code pops and car runs like **** again
i dont get it

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Are you still using the original fuel filter since the car was new?
replace it and see if that helps.
does this engine have one ignition coil for the engine or does it have one for each cylinder? if #4 is bad replace that one. good luck

Posted on Feb 23, 2009

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Sounds like something in fuel system is clogged form running to low on fuel if vehicle is old and fuel filter has not been replaced for a long time.
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Try running some fuel injector cleaner through your fuel tank. What you may have are a couple of plugged or missfiring fuel injectors. I would suggest checking all of your wiring to your injectors to insure good connection, replace your fuel filter and check for vacuum leaks.

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