[ritchic]

Hello
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?

Thanks

 

[ponykiller]

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