Hey guys i just put in a new crank kit and HV oil pump in my 400 because of the low oil pressure i was getting before so now i am running around 70 psi when cold and about 20-30 psi when hot i also want to add that i put in full synthetic valvoline 10w-30 after i put the new parts in was running fine for the first 2 days but this morning when i retorqued the heads and rockers when i started it after it started popping from the passenger side rear of the motor as your looking at it from the front of the truck i took the valve covers off and retorqued the rockers and checked the cylinder plug which has oil on it... now whats the most likely to cause this i also put in new valve stem seals since this cylinder had the same problem in it before? i checked compression and it went up to 140 psi and let it sit for about 10- 15 min and it only leaked about 5 psi.
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.
