Gray or white smoke is caused by burning oil. The 3 main causes are:
1: Worn out piston rings. (Rebuild motor)
2: Worn out valve guides. (Replace guides or whole head)
3: A cracked engine block.
Are all 8 plugs fouling out or are some okay?
Rich
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, October 6th, 2019 AT 4:39 PM
AL514
MECHANIC
4,632 POSTS
Are the plugs coming out wet when you check them? The engine could be running very rich, fouling out plugs. Especially considering how old the vehicle is.