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B. bigfish95971. 29812 posts · Joined 2010. #2 · Oct 15, 2017. No check valve needed because the return line goes to the bottom of the tank in the canister and is not exposed to air intrusion. 99 2500, Quad cab, 4x4 47RE, BD pressure lock on it, small BD 90/140 chip on the VP 44 connection plug, 17" 3rd gen wheels. 3.55 diffs.
Overflow valve failures was a P7100 thing not VP44. As for the return line it can drain out to a certain degree because the end at the tank is not submerged in fuel so it can and will drain down. So like I said return line usually don't cause issues but supply line will. That line is submerged in fuel so it should hold prime. As for overflow valve
A rubber tipped blow gun with regulated air line pressure is needed for this test. (1) Clean area around overflow valve and fuel return line at injection pump before removal. (2) Remove valve from pump and banjo fitting. (3) Discard old sealing gaskets. (4) Set regulated air pressure to approximately 97 kPa (14±16 psi).
Cummins 5.9L Fuel Rail Plug - Passenger Diesel. It just takes a minute to swap the PRV. Install the PRV block off plug and you will quickly know if your PRV is bad. Here is a pic of a 2003-2007 5.9L CR Cummins PRV blockoff plug: 2004.5 Dodge SB QC 2500 2wd Cummins 600/6spd manual/3.73 LSD.
1996 Ram 2500, 12 Valve Cummins, Extended cab long box, Built 47RE, Triple disc torque converter, custom valve body, added clutches. 4 inch straight pipe. No plate and tuned afc. Banks triple gauges. 1985 VW Jetta 1.6 diesel converted to turbo. 23 psi.
Joe G's fuel system writeup. The fuel system discussed here is the supply and return system. It does not include the injection. pump and injectors. The details in this discussion are based on my 1995 truck. There may be. some differences in other year models. There are some illustrations here that are scanned images.
Juiced99Cummins Discussion starter. well tonight i put a clear 1/2" hose off the inj. pump and it seems to be that the fuel is returning back to the airdog and tank. Almost as if its siphoning off back into the tank over time. once the airdog started priming the fuel built back up but when it shut off it was gone again.
Fuel return lines location on a 2010 6.7L. Gents: I am trying to find where the fuel return is to the tank on a 6.7L 2010. The 2008 manual says that for the 6.7L engine, the fuel return is both from: - The CP3 - Somewhere behind the valve head where the injectors have their fuel return. I cannot find the fuel return lines.
Went to bleed out my fuel system and got fuel flowing from the tank to the FASS and into the injection pump. (P7100 transplant). So far so good. As fuel began to flow from the Bosh overflow valve, it entered the cobbled up return line. This line tees into a secondary return line coming off the back of the head and then runs back to the the tank.
Fuel Injector “Pop Off” Pressure 31,026 kPa (310 bars) or (4500 psi 6 250 psi) Fuel Injector Leak-Down Pressure Approximately 20 bars (291 psi) lower than pop pressure Fuel Pressure Drop Across Fuel Filter Test Ports 34 kPa max. (5 psi. max.) at 2500 rpm (rated rpm) Overflow Valve Release Pressure 97 kPa max. (14 psi.) at 2500 rpm (rated ...