Excessive smoking
1990 Mercedes-Benz 420SEL

Excessive smoking

(1990 Mercedes-Benz 420SEL)
car smokes after being driven for half hour around town or up hill, car has 148,000 miles and has been resonably well maintained. It uses about 1 quart oil per 3,000 miles. Thanks.
1 answer & 1 comment
Popular Answer
of Auburn Foreign & Domestic on October 12, 2010
Worn valve guides or failed valve guide seals and piston rings worn or sticky can cause that concern. Greg
Sign in to reply
Thanks-sorry to get bacxk so late
Oil Leak Diagnosis
$88 - $111 Learn More
of Auburn Foreign & Domestic on October 12, 2010
Worn valve guides or failed valve guide seals and piston rings worn or sticky can cause that concern. Greg
Sign in to reply
Thanks-sorry to get bacxk so late

Similar Questions

View answers to similar questions from RepairPal's community of auto experts and enthusiasts.
Whenever i turn my car on a big cloud of thick white smoke comes out from my exhaust pipe and if i drive it, the car...
When trying to start vehicle it wouldn't start but it began smoking and gave off an odor resembling burning...