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HELP WITH PRESSURE TESTING HPOP system
Hi All -
Searched the forums on this and could not find a definitive answer. When pressure testing the oil system with shop air through the ICP connector, I saw Diesel Tech Ron (RIP) do it without energizing/closing the IPR valve (unless he just did not mention it). When I do it this way, I hear a very faint sound of air through the oil fill tube, and also at the crankcase breather tube on the driver side. Is very light, had to listen with some tubing. Used about 130 lbs of air.
Other guys on line aren't checking for leaks until they close the IPR valve. Can some please let me know if I have to close the IPR to correctly check for leaks? Or is this just isolating part of the system for specific leaks in certain areas?
Truck is an 05 studded with all the standard recommended updates. Has been running great and all of the sudden would not start (cold or hot). Hoping it is just an IPR valve, since I already have updated plugs, stand pipe, and stc fitting, and since the HPOPs don't usually go bad on 05 and later years...Any guesses on the problem or info on what closing the IPR Valve does during testing would be much appreciated. THANKS!
Numbers on torque app were:
ICP Pressure -key off - 0, cranking 300-400
IPR% - Key Off 14 Cranking 84%
ICP V- around .2 at Key off, 0.6 at cranking
RPM at crank 230
FICM sync yes.
Low pressure oil side is good
2005 PSD 6.0 FX4, STUDS, DELETE, 4" MBRP TURBO BACK EXHAUST, SRL+ TUNE, BLUE SPRING, CAT1/ELC COOLANT, SINISTER COOLANT FILTER, SYNTHETIC OIL, ARCHOIL FUEL AND OIL ADDITIVES, TORQUE APP MONITOR SYSTEM