J-Body Automobiles Forum banner

89 Sunbird Over Head Cam Problems

365 Views 1 Reply 2 Participants Last post by  ponykiller
I have recently acquired an 89 sunbird that's not running on all Cylinders so I assume that it is a head gasket. I was informed by a mechanic that GM had a lot of problems with the early overhead cams as the oil galleries were not large enough causing the cams to wear to nothing. Has any one else had this problem?

1 - 2 of 2 Posts
do a compression test..if two adjacent cylinders have low compression then you prolly need a headgasket(and check the head for straightness and cracks between the sparkplug holes and the exhaust valve)....if only one cyl. has low then there could be a camlobe worn or something in that cylinders' valvetrain..if the test shows all 4 fairly equal then you need to go to the tune up basics: check the plugs,cap,rotor,wires,vacume leaks
1 - 2 of 2 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.