Spark plugs & coil packs
10-27-2012, 10:26 PM
#1
Spark plugs & coil packs
Had been about a neglectful two 1/2 yrs before I decided to look at em again. It got cooler out so I assumed the change in temp was causing my exhaust to make a sort of bubbling/soft popping sound after a cold start. On the second day of denial I completely overlooked it. Upon leaving the mall on day 3 I notice the bubbling and then a check engine light. But thennnnnnnn......my car became a Subaru STI.....misfires upon misfires from all cylinders commenced. I mildly pressed the throttle but there was 10% available due to the cars state. I went to the Autozone for a free diagnosis and got about 5 diff CEL codes. I popped open each cylinder one by one, removing each coil pack nice and easy. Having used "Never Seize" in the past made my plugs come right out.....until cylinder 2 . Turns out the bottom end of the coil pack (the end closest to the plug) MELTED and DISINTEGRATED . There is debris and am concerned. I will be attempting to clean when my new coil pack arrives. Any suggestions friends. Few guys recommended using a grease to scoop up debris in cylinder.
10-27-2012, 11:51 PM
#2
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That happened to me before...
it melted like that because your tread is bad... hot air was coming out...
I took the head out and got it to a machine shop to get them fixed.. $55/hole
if you put another 1 on thiking you are good... you are wasting your time.. it will melt again
it melted like that because your tread is bad... hot air was coming out...
I took the head out and got it to a machine shop to get them fixed.. $55/hole
if you put another 1 on thiking you are good... you are wasting your time.. it will melt again
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10-29-2012, 09:40 AM
#9
Somewhat of a related question when disconnecting the coil packs from the harness. When I changed my plugs last, everything went just fine, except for when disconnecting the harness from the pack closest to the firewall. The harness side is supposed to have a small blue plastic insert that holds the pins on the pack, and what looks to be a green rubber seal behind it.
When I took off that particular harness, the blue bit fell out and was never to be found (before I pulled the pack, so it did not fall in). The Honda parts diagram shows the entire harness as one costly part. Is there any issue in driving without that bit? Have not had any CELs, but after a warm start once the engine took just a couple seconds longer to turn over.
Any help appreciated.
Thanks!
When I took off that particular harness, the blue bit fell out and was never to be found (before I pulled the pack, so it did not fall in). The Honda parts diagram shows the entire harness as one costly part. Is there any issue in driving without that bit? Have not had any CELs, but after a warm start once the engine took just a couple seconds longer to turn over.
Any help appreciated.
Thanks!
10-29-2012, 10:43 AM
#10
Moderator
There is absolutely no reason to use anti seize on s2k spark plugs, and I highly caution against it.
A touch of WD40 is all you need to prevent galling.
A touch of WD40 is all you need to prevent galling.