Possible problem while changing spark plugs - 2003-04 Mach 1 Registry Owners Club

Ichevyracer · 12-27-2014, 10:19 PM

Decided to change my spark plugs today. Everything was going real smooth.

Got to number 8 cylinder (passenger side rear most) and noticed corrosion on the coil boot.

Here is a picture of what the area around the coil looks

Also had missed some corrosion from number 6. Everything was going so easy I didn't think to check it.
Here are up close of cylinder 8

Here is the spark plug that came from cylinder 8

All the rest of the coils and walls looked like number 2

Am I over reacting thinking that I headed for trouble? Or is just a loose seal around the cover and water has gotten under the cover. Car hasn't shown any issues.

Mach828 · 12-27-2014, 10:47 PM

Common problem if the coil cover seal leaks. Usually its through the back where yours did. Just use a vacuum and try and clean it up the best you can. Use rtv when you reassemble to keep water out.

Ichevyracer · 12-27-2014, 11:01 PM

Thank you. Figured that was all it was. Just needed to hear/ read it from someone else.

j rick kirby · 12-28-2014, 08:37 AM

Quote:

Originally Posted by Mach828

Common problem if the coil cover seal leaks. Usually its through the back where yours did. Just use a vacuum and try and clean it up the best you can. Use rtv when you reassemble to keep water out.

Yep a little dollop of RTV where the wire comes thru.

Explosive · 12-28-2014, 08:03 PM

I also always put a dab of rtv on the end of the cover when i reinstall.

12-27-2014, 10:19 PM	#1
Ichevyracer Registered User Join Date: Sep 2010 Location: Hertford, NC Posts: 129	Possible problem while changing spark plugs Decided to change my spark plugs today. Everything was going real smooth. Got to number 8 cylinder (passenger side rear most) and noticed corrosion on the coil boot. Here is a picture of what the area around the coil looks Also had missed some corrosion from number 6. Everything was going so easy I didn't think to check it. Here are up close of cylinder 8 Here is the spark plug that came from cylinder 8 All the rest of the coils and walls looked like number 2 Am I over reacting thinking that I headed for trouble? Or is just a loose seal around the cover and water has gotten under the cover. Car hasn't shown any issues. __________________ 2004 Mach 1- JLT RAI, Magnapack catback

12-27-2014, 10:47 PM	#2
Mach828 Dark Knight Join Date: Nov 2009 Location: Albuquerque, NM Posts: 5,759	Common problem if the coil cover seal leaks. Usually its through the back where yours did. Just use a vacuum and try and clean it up the best you can. Use rtv when you reassemble to keep water out. __________________ Vortech V2 S-trim, E85, A2A Treadstone, Comp cams, built engine, full exhaust, built rear, built 4r70, more mods. Tuned by me with SCT Advantage

12-27-2014, 11:01 PM	#3
Ichevyracer Registered User Join Date: Sep 2010 Location: Hertford, NC Posts: 129	Re: Possible problem while changing spark plugs Thank you. Figured that was all it was. Just needed to hear/ read it from someone else. __________________ 2004 Mach 1- JLT RAI, Magnapack catback

12-28-2014, 08:03 PM	#5
Explosive Registered User Join Date: Jul 2010 Location: Michigan Posts: 876	Re: Possible problem while changing spark plugs I also always put a dab of rtv on the end of the cover when i reinstall.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)