#Leak proof 6.0 coolant cap install#

From the factory, the STC fitting was 2-pieces that snapped together with an o-ring and metal flange. Next comes the Snap-To-Connect (STC) fitting, probably the most trouble prone piece in the system. The outer 2 holes are for the bolts that attach it to the branch tubes under the HPOP. The threaded end goes into the back of the HPOP, oil flows through the center of it, and out through the center hole of the block portion. 05-07 engines don’t seem to have this problem.

#Leak proof 6.0 coolant cap install#

There really is no fix for the consumer other than to go to the aftermarket, where there are some all metal HPOP’s you can install to remedy this problem. The HPOP on the 03-04 engines used some plastic parts on the inside that were prone to breaking apart and trashing the pump itself, and all the various other parts in the system.

In 05, International went through and redesigned many parts of the 6.0 to try and take care of all the problem spots found on the 03-04 engines, and they sort of succeeded. The first thing in the oil system I want to talk about is the High Pressure Oil Pump (HPOP), and this is confined to the 03-04 model years. There are many different points of failure in the system that can lead to either crank-no-start issues or hot-start issues, and I will attempt to work through them all in this write-up, as well as some fixes for them. There is one subsystem in the engine that causes more headaches for owners than either the head gaskets or EGR coolers the High Pressure Oil System. 1 Navistar (parent company of International) cut corners wherever they could to save money and 2 proper maintenance is not performed, either privately by the customers, or by poorly trained technicians. The main cause of both of these issues are a combination of 2 things. Though not necessarily catastrophic, both of these issues are a big pain in the ass and cost the owners tons of money and down time. When talking about the Ford 6.0, the big issue that people have with them is the fact that the head gaskets love to blow out, and the EGR cooler loves to blow, causing plumes of white smoke to billow out of the exhaust like you’re fogging for mosquitos. Snyder is back with more tips & tricks to help keep a Ford 6.0 liter going strong! Be sure & check out Part I as well!