Hi guys, new here. I have a 97 formula that im having a horrible miss from the #6 Cyl. Normally I would chalk this up to plugs and wires, but I just had it at the GM dealership for this not even 1500 miles ago. The only code it has is for the #6 misfire. Im at a loss and need some ideas.
Bad missfire on CYL 6
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406 Posts
Swap 2 injectors.. if it stays at 6 its not an injector. Could do the same with the plug.. also use a spark checker to make sure u got spark at plug..
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5,014 Posts
it only takes about 5-10 minutes to pull both fuel rails, suspend them, throw a peice of cardboard under each one, unplug the coil connector (might as well, just so it dont spark), and have someone crank it.
you can see them spraying and figure out what's going on.
you want a nice fine mist, not a hose-like stream.
make sure all injector retaining clips are in place before doing the test !!
also when you are not cranking, confirm no injectors are dribbling (leaking)
you can see them spraying and figure out what's going on.
you want a nice fine mist, not a hose-like stream.
make sure all injector retaining clips are in place before doing the test !!
also when you are not cranking, confirm no injectors are dribbling (leaking)
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6,381 Posts
IMHO, the law of averages points to it being one of those things since they were last touched by someone.
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162 Posts
If the GM dealership just tuned it up, take it back they should have a warranty. was it missing before you took it to them?
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