Need help.. Rough idle/missfire - ZR-1 Net Registry Forums

1991KOTH · 04-28-2017

Well.. Changed the spark plugs today hoping it would fix the woes I was having after starting the car about a week ago finding the rough idle but no dice. The plug in cylinder #7 was rough, so after changing all of them out and finding out it still was running rough i pulled the NEW plug out and there was oil on virtually half of the threads. I pulled another new plug on another cylinder to see if this was the case, but it didnt have the same issue.
Thats the new plug from #7 after removing it after starting it.

Here are all the old plugs:

Im kind of worried now.. Should I check the fuel system next or should I fear for the worst (piston ring)?

Sent from my iPhone using ZR-1 Net Registry

04-28-2017	#1
1991KOTH Join Date: Nov 2016 Location: Florida Posts: 66	Need help.. Rough idle/missfire Well.. Changed the spark plugs today hoping it would fix the woes I was having after starting the car about a week ago finding the rough idle but no dice. The plug in cylinder #7 was rough, so after changing all of them out and finding out it still was running rough i pulled the NEW plug out and there was oil on virtually half of the threads. I pulled another new plug on another cylinder to see if this was the case, but it didnt have the same issue. Thats the new plug from #7 after removing it after starting it. Here are all the old plugs: Im kind of worried now.. Should I check the fuel system next or should I fear for the worst (piston ring)? Sent from my iPhone using ZR-1 Net Registry

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