Compression Ignition Addict
Join Date: Feb 2011
Location: upstate ny
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If you have replaced (correctly) all of the above, there can't be much left. Have you verified the LPOP is supplying proper pressure/volume to the HPOP? Pull the oil filter/cap, depress the button, and have an assistant crank the truck. It should fill the resovoir within 5-10 seconds. If it doesn't, or is aerated, look at the supply side. If it does, then the branch tube is likely broken. I had an 04 that the right side broke off completely. It isn't unheard of.
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2005 Lariat CCSB F-350 SRW
300,000 miles and going strong
12" fabtech lift with 40" Xterrain's on M/T classic locks, Adjustable track bar, Bilstein 7100 reservoir shocks
Edge juice/attitude CTS, SCT with ID tunes, Snow meth. injection, Diamond eye 4" exhaust, 03 turbo, ARP studs, Sinister coolant filter
2010 stone seats/console, pioneer avic d3 with backup camera/bluetooth
Viair 450c compressor, dual 2.5 gallon tanks, air horns rated @115db