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Old Jul 24, 2023 | 08:37 PM
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GraphiteGhost
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Joined: Jul 2009
Posts: 6,296
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From: Central South Carolina
Default Re: Oil Fouled sparkplug

Originally Posted by Crow13
I'm a new member, recently purchased an SRT6 coupe with 66k miles. Choice condition, but after a couple of days. developed a miss. Figuring it was best to get a clean start, replaced all coils, plugs, and ignition wires. Ran great - for one day, next time I started it, the miss was back. I had scheduled an oil change, trans service and AC check, so I asked the tech to run a diagnosis. He said #2 cyl was missing, the plug coated with oil. Suggested it was likely either a stuck or broken piston ring, or an intake valve valve stem seal. In either case it would require pulling the head and some $$$ repairs.
Has anyone encountered this? Any suggestions? I didn't hunt a long while to find a car that would send some mechanic's kids to college.
Love the car and really wish I could remedy this issue and start enjoying it.


Hello and welcome. A few questions to help clarify for myself and other members here. Where did you take the car, was it an independent mechanic that knows MB SLK-320/AMG-32 series Benz (the drivetrain for the N/A crossfire is almost 100% MBenz 2004(ish) SLK-320 (or if the SRT-6, the AMG-32 series MBenz). Is the car back home with you? Do you have the capability to 'self help' with various systems and/or replacing any parts? Also please include (if the car is back at 'home') if you pull the #2 plug yourself do you see if it is in fact currently doused with oil after the engine has been running for a few minutes. And finally, do you see/smell at the exhaust pipe, any odor or oily residue. I know it is a number of questions, but I ask your indulgence for all the posted questions in my query.


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