View Single Post
Old 06-08-2012, 07:29 PM
97 SL320 97 SL320 is offline
Registered User
Join Date: Jan 2012
Posts: 7,534
A couple of things.

How low compression?

Do a leak down test before taking the motor apart, see where the air leaks out.

Are you losing coolant from the rad?

Is this motor CIS or EFI ? If EFI, pull injector wires one at a time to isolate the weak cylinder. If CIS you will have to make a spark plug wire set that allows for shorting a cylinder at a time. You might be able to loosen a fuel injector line to drop a cylinder but it might take the pressure down for the other cylinders, have not tried it.

For a cylinder crack to drop compression much, you would be pushing lots of air out of the rad and have lots of antifreeze coming out the exhaust.
Reply With Quote