Question about 1999 Buick LeSabre

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Lesabre I moved the ignition coils around and the problem stayed at cylinder # 6, so it must be the fuel injector. Is it risky for me to remove and replace the injector? What's the correct procedure? Thanks

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You just need to remrber at the top of the injector is the fuel rail. that is what hold the injector in place. also remember that the fuel rail has pressure . so you need to be careful . also this area need to cleaned with air pressure . just remember the bottom of the injector sticks right into the intake manifold .there are a couple of bolt that hold the fuel rail in place. remove the bolts and pry off the rail. there is a special oring on the top and bottom of the injector. some times they will come off whenyou pull the injector. so make sure you know where these are at. if you loose one or if they are in bad shape auto part stores have these.. switch your injectors. when you stick the injectors back in you have to pull every injector on that rail. and lube the orings so they will slide into place.
its realy not to hard just takes time and need to be clean good luck.
paul

Posted on Aug 31, 2008

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hey thanks for bringing me up to speed. ive been working on many other problems but with your great explanation i remember.
we need to check the compression on that cyl. and compare it to the compression on 2 other cylinders your choice.
but before you do this get a can of carb cleaner . and with the car idling spray around the intake manifold in the area of #6 cyl. what we are looking for is a small vacuum leak that would also act like this. with the engine idling and spraying around the intake the engines idle sould not change and if it does when you spray you have an intake leaking.
let me know how it turns out.
later
paul

Sep 22, 2008 | 1999 Buick LeSabre

1 Answer

Lesabre


the way i check the coil is move it to another cyl clear the codes and see if it follows the coil. injectors can be cleaned but when they are bad enough to cause a code to be set it needs to be replaced.

Aug 30, 2008 | 1999 Buick LeSabre

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