hey guys have an 01 cobra 120k on her. i have a blue puff on the start up i know that is extremely common on the dohc's but idleing to a 6k rev after it is downrevving it huffs out some blue when its getting back near idle what could be causing such a thing i did a compression test im sitting at about 165-170 psi across the board. could it be valve seals? valve guides? rings? pcv issue? im also running a 5w-20 oil is that too thin for the milegae on this motor? any help would be greatly appreciated.
blue smoke
- Thread starter 1996dohcsvt
- Start date
May want to try a wet compression test if compression increases possible bad piston rings
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