Hey guys! Have a new to me 03 cobra I picked up about a month ago. Going to be kind of long but ill do my best to shorten it up!
Got the car home and drove it for a few days took it out and did a couple wot pulls mainly 2-3 with one 2-4 pull the last pull I heard some detonation and verified it went lean via wide band, so I let out as soon as i heard/saw this. Well drove a few more days just putting around and noticed a miss so I pulled the plugs. One plug was missing half of the ground strap. So I replaced the plugs and did an oil change since it was unknown to me when the last one was done. Put in 6qts of Mobil 1 5w30. Now fast forward a couple days and started to notice smoke on start up. Did a search on here and found that to be normal.
Few more days later noticed the "puff" was now a cloud. Now last week I've been noticing a cloud every time I start the car, when I leave a light, and in between every shift. This has me kind of worried. So car started with a little miss again so I checked the plugs and decided to do a compression check since I was noticing more and more smoke. Came up wth decent results and nothing that would worry me except that #7 plug is covered in oil. So once again put a new plug in and drove 60 miles pulled the plug and it is oil fouled again.
So with that being said what should I look at and check? I have a feeling it could be valve seals and according to a friend of mine he is thinking the same, but just want to see what others opinions are and other things to check out. Im going to try to do a leakdown on that cylinder in the morning if I can get a tester from a friend!
Also have read about guys switching to mobil 1 and having smoking problems could this be all that is going on or is it something bigger!!??
Got the car home and drove it for a few days took it out and did a couple wot pulls mainly 2-3 with one 2-4 pull the last pull I heard some detonation and verified it went lean via wide band, so I let out as soon as i heard/saw this. Well drove a few more days just putting around and noticed a miss so I pulled the plugs. One plug was missing half of the ground strap. So I replaced the plugs and did an oil change since it was unknown to me when the last one was done. Put in 6qts of Mobil 1 5w30. Now fast forward a couple days and started to notice smoke on start up. Did a search on here and found that to be normal.
Few more days later noticed the "puff" was now a cloud. Now last week I've been noticing a cloud every time I start the car, when I leave a light, and in between every shift. This has me kind of worried. So car started with a little miss again so I checked the plugs and decided to do a compression check since I was noticing more and more smoke. Came up wth decent results and nothing that would worry me except that #7 plug is covered in oil. So once again put a new plug in and drove 60 miles pulled the plug and it is oil fouled again.
So with that being said what should I look at and check? I have a feeling it could be valve seals and according to a friend of mine he is thinking the same, but just want to see what others opinions are and other things to check out. Im going to try to do a leakdown on that cylinder in the morning if I can get a tester from a friend!
Also have read about guys switching to mobil 1 and having smoking problems could this be all that is going on or is it something bigger!!??
