re-installed rocker but still no compression
#1
11-08-2007, 09:16 PM
Join Date: Jul 2005
Location: Amanda,Ohio
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re-installed rocker but still no compression
I recently replaced my old 4.6 with a newer 4.6 out of a cougar...after doing the swap the new motor ran like crap so after a compression test revealed 0 compression in the #6 cylinder...I removed the valve cover and the rocker arm had fallen off...I got it back on after alot of effort without the special valve spring tool...I turned the engine over a few times with the valve cover still off and the rocker arm fell off again...I took the rocker arm and lifter off of my old motor and put them on and the have stayed so far...this is without any plugs in the motor and all of the injectors still unhooked...I did a quick compression test immediately but still no compression...am i doing something wrong or do you guys think it is a much larger problem...maybe without the motor actually running the lifters arent building pressure? I put some oil in the cylinder and its still on 0 compression...
#2
11-09-2007, 12:42 AM
Sounds like what happened to my nieces 94 Cougar. The valve galled into the guide and is sticking open. Hers ran low on oil for about 1 minute when the oil sending unit broke and it runied the cam pedistal and stuck an intake valve. The mechanic at the ford dealer said it is not uncommon on older engines to get build-up on the valves which will cause them to hang open. Pump air into that cylinder. I'll bet you will hear it leaking into the intake. If not, the exhaust. Line the cam up so both followers are on the base of the lobe.
#6
11-09-2007, 08:09 PM
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#7
11-10-2007, 04:11 PM
