sbc oil on plugs but not missing
04-05-2008, 04:12 PM
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sbc oil on plugs but not missing okay i was wondering y on one side of my 350 3 plugs in a row are getting fouled out because of oil the car isnt missing and the all three cylinders have good compression no vaccums leaks and i have changed the plugs several times and got hotter plugs but it still does it any help is appreciated
04-07-2008, 10:49 PM
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could be a few things bro. i know you did a compression check, but did you check for leak down? i dont think thats it anyway. sounds like you have 1 of 2 things.
1) worn valve guides,allowing oil in to the cylinder.
2) worn valve stem seals,allowing oil into the cylinder
or possibly both. thats usually what causes it. improper valvetrain geometry can quickly ruin valve guides. is this motor stock?
1) worn valve guides,allowing oil in to the cylinder.
2) worn valve stem seals,allowing oil into the cylinder
or possibly both. thats usually what causes it. improper valvetrain geometry can quickly ruin valve guides. is this motor stock?
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04-13-2008, 02:27 PM
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well the heads are milled but dont know if they are matched but when the guy pulled the heads off the 3 ones that are getting oil on them didnt have any carbon build up on them like the others that are working good keep in mind these are not missing just turning black.
