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Originally Posted by shavereng I also have a 91 300 E with same symptom. 185 psi all cyl. except #3 which is 0.
If anyone has a solution short of head rebuid or major work, I'll try. otherwisw car is too old and banged up to do major engine work.
Don |
In my case #3 turned out to have a chipped valve. No damage to piston at all but valve was chipped. Also had traces ov valve blow by in the intake tracks of the 2 other cylinders with lower compression than the others. Valve job most definately indicated. Springs all tested good. Head being completely redone by a local shop for a very reasonable price, so I am not going the pre-rebuilt head route. Should be reassembling this week.
Pulling the head was not especially difficult.....time consuming, but not terribly difficult.