Join Date: Apr 1999
Location: Justin,Texas, Republic of TEXAS (USA)
Feedback Score: 0 reviews
If it has never left the shop and been at run at higher throttle and higher load pulling the truck down the road you could have in the oil rails. I have had several I had oil rails off of for head gaskets or just injectors or stand pipes. When I put them together I found other repairs needed and the truck was not put together and driven so they had long crank, high idle IPR %, etc. Once I finished the truck and did test drive 5 miles and ran it hard it had no issues. Dozens of thousands of miles later no hot start complaints. There is not an air bleed for those cyl head oil rails at their high points. The air is compressible and the HPOP volume is not great. It takes the HPOP a bit of turning to build start pressure before it fires off. Once running the air is fighting pressure retention and it makes the IPR valve duty cycle high. Once you run it hard and the volume in oil rails is higher it will push the air out and all those bad things and bad numbers should resolve themselves. That you have air tested it you've done two things: you see that it has no leaks and you put more air in the system and made the problem persist with little improvement when it may have gotten better.
You may have a problem but I really think from what you've posted that you have not gotten the air out and your problem is not a problem.
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