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Old 05-30-2021, 01:27 PM   #1
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Curious why you think it's the injectors. From reading it looks like you have at least a wiring issue with the o2 sensor.

What sensor on the cylinder are you referring to?

do what JFP suggests. Very much doubt you have a bad cylinder as you would have more problems and noises if so.

To test the injectors the best thing to use is a NOID. It will tell you if an injector is getting power. You can also bench test each injector to see if they at least work, which I bet they all do.
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Old 05-30-2021, 01:35 PM   #2
ecp
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Quote:
Originally Posted by Stl-986 View Post
Curious why you think it's the injectors. From reading it looks like you have at least a wiring issue with the o2 sensor.

What sensor on the cylinder are you referring to?

do what JFP suggests. Very much doubt you have a bad cylinder as you would have more problems and noises if so.

To test the injectors the best thing to use is a NOID. It will tell you if an injector is getting power. You can also bench test each injector to see if they at least work, which I bet they all do.
i figured if it’s not spark, it’s probably fuel. this car is my baby and my daily so i am just distraught and frustrated. there is an ugly noise, if i could figure out how to share the youtube link. i bench tested and cleaned all injectors. they all work and all have a good spray. there was a good amount of junk that came out of them though. dark fluid. one of them smelled funky and had more deposits than the other, but still worked when i had it hooked up.

my aftermarket exhaust has the primary o2 sensor running off the cyl. 6 pipe before it merges. might be time to extend the wires and attach to the port after the merge for more accurate a/f instead of one cylinder.
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Old 05-30-2021, 05:01 PM   #3
ecp
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Quote:
Originally Posted by Stl-986 View Post
Curious why you think it's the injectors. From reading it looks like you have at least a wiring issue with the o2 sensor.

What sensor on the cylinder are you referring to?

do what JFP suggests. Very much doubt you have a bad cylinder as you would have more problems and noises if so.

To test the injectors the best thing to use is a NOID. It will tell you if an injector is getting power. You can also bench test each injector to see if they at least work, which I bet they all do.
coils and injectors are both getting power. i don’t know how two cylinders would both lose compression at the same time if that’s the case. and unfortunately it seems that way until i do a compression test.
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Old 05-30-2021, 05:07 PM   #4
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Yes it sounds like a compression check is in order.
Let us know what you find.
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Old 05-30-2021, 08:14 PM   #5
ecp
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Yes it sounds like a compression check is in order.
Let us know what you find.
zero compression on cylinders one and two, 150 on three. didn’t bother with the rest.

i still can’t understand how they’d just blow at the same time like that. this is a 3 chain motor so i don’t know if that would make a difference or not
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