Spark plug issue. - Page 3 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

L99CAMA2011 · 03-28-2017, 08:17 PM

Quote:

Originally Posted by Bo White

Anytime you think you have a cylinder not firing and you have headers just take a spray bottle with water and spray each header while its running. It will show the colder header tube on the faulty cylinder.

Did That. cylinder #4.

Bo White · 03-28-2017, 09:29 PM

Now find out if its compression, spark or fuel related.

L99CAMA2011 · 03-28-2017, 10:13 PM

You guys have been great help and I really appreciate it.

h018871 · 03-30-2017, 02:15 PM

I'm curious, what did you find?
simple & cheap i hope!

L99CAMA2011 · 03-31-2017, 12:22 AM

Quote:

Originally Posted by h018871

I'm curious, what did you find?
simple & cheap i hope!

Not resolved yet but honestly I am leaning towards injector for #4 cylinder.

Bo White · 03-31-2017, 02:36 AM

Fire the engine up and put a long 3/8 extension against the injector and the other end to your ear. Dead give away. Old school stethoscope lol

L99CAMA2011 · 04-01-2017, 07:48 AM

Quote:

Originally Posted by Bo White

Fire the engine up and put a long 3/8 extension against the injector and the other end to your ear. Dead give away. Old school stethoscope lol

Dude I was thinking of that from the word go.

Russell James · 04-01-2017, 08:58 AM

An actual mechanic's stethoscope works great too. Little more precise.

Have you ever had any of the connections at that valve cover apart? That big connector in the center? Trace back everything you've touched right before #4 died. Common for a pin to get pushed back. Trust the...U-touched it... theory.

Get those basic diagnostic tools, ST125 noid light stethoscope... you'll have about 50 bucks in tools you'll use the rest of your life. And will stop buying new expensive parts before diagnosis.

The injector connector is easy to look at. That big connector on the valve cover can be a little more complicated. If you end up suspecting that big connector on the valve cover, get a high resolution pic of both the male and female ends of that connector. Blow it up, and look for pins that have been pushed back. Get some dielectric grease, smear up that connection before putting it back together. Not overdoing it, but a nice even light coat. There is a bulletin for all ECM/BCM/EBCM... module circuit connections need dielectric grease. And what they call a pin drag test, take a male test pin and probe each female... a loose one will be obvious. But the high res pic works pretty good. Blowing a connector end way up makes it easy to see a female terminal spread apart, or a male terminal that has been pushed back.

And if your injector has no resistance... there's your perp. Ohm it.

OmniCamaro · 04-02-2017, 04:13 PM

Quote:

Originally Posted by JusticePete

Five minutes with a factory style OBDII or even a plug and scan at an auto parts store should provide more information.

I'd agree. Doing a data log should find the issue or at least rule out a lot.

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03-30-2017, 02:15 PM	#32
h018871 Geoff Drives: 2020 ZL1 Green Join Date: May 2013 Location: Houston Posts: 1,720	I'm curious, what did you find? simple & cheap i hope! __________________ Having a Blast https://www.camaro6.com/forums/showt...php?p=10741733

03-28-2017, 09:29 PM	#30
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	Now find out if its compression, spark or fuel related.

03-28-2017, 10:13 PM	#31
L99CAMA2011 Drives: One of the baddest handling Gen 5s Join Date: Feb 2011 Location: Masachusetts Posts: 4,177	You guys have been great help and I really appreciate it.

03-31-2017, 02:36 AM	#34
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,019	Fire the engine up and put a long 3/8 extension against the injector and the other end to your ear. Dead give away. Old school stethoscope lol

04-01-2017, 08:58 AM	#36
Russell James Drives: '15 SS 1LE, '69 Z28 drag car Join Date: Dec 2009 Location: Mich Posts: 4,482	An actual mechanic's stethoscope works great too. Little more precise. Have you ever had any of the connections at that valve cover apart? That big connector in the center? Trace back everything you've touched right before #4 died. Common for a pin to get pushed back. Trust the...U-touched it... theory. Get those basic diagnostic tools, ST125 noid light stethoscope... you'll have about 50 bucks in tools you'll use the rest of your life. And will stop buying new expensive parts before diagnosis. The injector connector is easy to look at. That big connector on the valve cover can be a little more complicated. If you end up suspecting that big connector on the valve cover, get a high resolution pic of both the male and female ends of that connector. Blow it up, and look for pins that have been pushed back. Get some dielectric grease, smear up that connection before putting it back together. Not overdoing it, but a nice even light coat. There is a bulletin for all ECM/BCM/EBCM... module circuit connections need dielectric grease. And what they call a pin drag test, take a male test pin and probe each female... a loose one will be obvious. But the high res pic works pretty good. Blowing a connector end way up makes it easy to see a female terminal spread apart, or a male terminal that has been pushed back. And if your injector has no resistance... there's your perp. Ohm it.