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      01-16-2021, 07:43 PM   #32
TopJimmy
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Drives: 2023 M3 Comp xDrive
Join Date: Jul 2019
Location: Chester County, PA

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Your spark plug condition should tell you if an injector is squirting too much. I've never heard of the S55 getting clogged injectors (too little fuel), just stuck ones (too much).
Like 3 out of the 6 were clogged on mine. None were pouring fuel. #1 was stuck shut.

After cleaning they are all firing perfectly and got a grade of excellent.
Thanks Papa! Now we know. What fuel were you using when you clogged?
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Originally Posted by TopJimmy View Post
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Originally Posted by papasmurf_m3 View Post
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Originally Posted by TopJimmy View Post
Your spark plug condition should tell you if an injector is squirting too much. I've never heard of the S55 getting clogged injectors (too little fuel), just stuck ones (too much).
Like 3 out of the 6 were clogged on mine. None were pouring fuel. #1 was stuck shut.

After cleaning they are all firing perfectly and got a grade of excellent.
Thanks Papa! Now we know. What fuel were you using when you clogged?

If you were to take out ur injectors if you thought one had an issue, how could you physically tell if one is stuck open by looking at it?
Put your lips on the threaded end and make a little pressure. A stuck one bleeds air. I put a squirt of rubbing alcohol in there and it came out the tip. A good injector should stay shut until triggered electrically to open.
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