Low compression in cylinder 4
#1
09-08-2018, 03:53 PM
Low compression in cylinder 4
Im getting a massive misfire from cylinder 4 would low compression on a cylinder cause this I have 150psi in 1,2,3 and 4 is 75psi
Dealer says I need a new turbo new cylinder head and rear main seal 12k $ in work I say B.S.
thoughts? Could a vacuum leak be the cause of the misfire?
Dealer says I need a new turbo new cylinder head and rear main seal 12k $ in work I say B.S.
thoughts? Could a vacuum leak be the cause of the misfire?
#2
09-11-2018, 09:12 PM
The easiest thing to do is change the spark plugs then put coil #3 on plug #4 (swap) . If you still have the miss on #4 then it's the cylinder. Also because you only have 75 psi in cyl 4 you may either have a leaking head gasket or a burnt valve which either way requires the head to be removed. If the valves are good then you have a cylinder issue and you'll have to reach deeper into your pockets. Good luck
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