What's the name of this
02-13-2015, 08:33 PM
#11
Quit spreading bad information. Your head gasket leak was caused by a flaw in cylinder head design itself. Not a leaking exhaust manifold. It was common on all 4.6 that were built before 01, and 5.4 engine before 00.
This design flaw could have leaked 1 of 2 ways. Either it would leak coolant on the front side of the head, or would leak oil around the rear oil return galley in the head.
The issues were fixed with the PI heads along with a different designed head gasket with different coatings.
This design flaw could have leaked 1 of 2 ways. Either it would leak coolant on the front side of the head, or would leak oil around the rear oil return galley in the head.
The issues were fixed with the PI heads along with a different designed head gasket with different coatings.
02-13-2015, 08:38 PM
#12
02-14-2015, 10:38 AM
#13
Quit spreading bad information. Your head gasket leak was caused by a flaw in cylinder head design itself. Not a leaking exhaust manifold. It was common on all 4.6 that were built before 01, and 5.4 engine before 00.
This design flaw could have leaked 1 of 2 ways. Either it would leak coolant on the front side of the head, or would leak oil around the rear oil return galley in the head.
The issues were fixed with the PI heads along with a different designed head gasket with different coatings.
This design flaw could have leaked 1 of 2 ways. Either it would leak coolant on the front side of the head, or would leak oil around the rear oil return galley in the head.
The issues were fixed with the PI heads along with a different designed head gasket with different coatings.
02-14-2015, 10:58 AM
#14
Senior Member
It reads like a oil cooler issue, however Modular V8's have been know to have some head gasket issues. Aluminum heads on iron have a tendency to be a little hard on gaskets.
I would run a compression test to eliminate the head gaskets. This will also give you an idea of the engine's health given its age.
Also, check you exhaust studs while your looking around. I had several cracked studs which led to my head gasket failure.
My truck is a equipped with the oil filter adapter (4.6L) and there was all kinds of post in regard to them leaking oil.
In you case, I think you can pressure test via the lines (requires coolant to be drained). I've read this somewhere before, but I can't remember where.
I would run a compression test to eliminate the head gaskets. This will also give you an idea of the engine's health given its age.
Also, check you exhaust studs while your looking around. I had several cracked studs which led to my head gasket failure.
My truck is a equipped with the oil filter adapter (4.6L) and there was all kinds of post in regard to them leaking oil.
In you case, I think you can pressure test via the lines (requires coolant to be drained). I've read this somewhere before, but I can't remember where.
These head gaskets SHOULD last the lifetime of the engine. The only reason they wouldn't if from some sort of abuse, - like overheating and/or air in the coolant sytem, - "hot spots" They don't suffer heat that well. Only takes one time with a little more heat than their use to.
FYI, - The exhaust studs at the rear of the heads shear because of the transmission mount needs servicing..replaced. They wear out, go metal to metal and sink once the bushing disappears. The exhaust Y is tied to the trans mount. That friction and downward pressure gets applied directly to the manifolds...specifically at the rear.
Last edited by Jbrew; 02-14-2015 at 11:00 AM.
02-14-2015, 12:53 PM
#15
Like I said. Your just plain wrong. What you saw, what you think the cause was, and the actual culprit was are completely different things. Try again.