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Yes there is a fuel pressure port on the fass pump itself. There is a plug in it that gets taken out to install a fuel pressure sensor. 2008 LMM CCSB 2500HD 4x4 (170,000) Mods: -Big Dipper Trans/Pump Rub Fix by Todd S. -Lifted (35x12.5 R18) -Fully Deleted -4" Exhaust -EFI Live by PPEI. Reply Like.
18259 posts · Joined 2008. #5 · Mar 11, 2013. That is for fuel supply pressure, and can be 10-20 lbs, depends how it is set. The fuel rail pressure is the injector pressure and can be 5k up to 23k. That is very high pressure. If you drill and tap the fuel rail, you may develop a leak and it be difficult to fix.
Jared Herzog. 101 posts · Joined 2012. #2 · Aug 13, 2017 (Edited) Fuel rail will be much higher than a lift pump pressure. One is 5-10 psi one is 20,000+ psi. I used an autometer cobalt gauge. It reads about 5-7 psi off of the fass 95. It matches the factory gauges very well. I would get a lift pump gauge that is numbered less than 20.
most fuel pressure gauges are done electronically i know the ppe one for my 06 piggy backs on a connection somewhere i still need to buy it. 2011 GMC sierra 1500 SLE . SOLD 2006 chevy 2500HD CCSB LLY Dmax. zf-6, with southbend DD, ppe brushed high capacity dif. cover, quadzilla stealth 2 off road tunes, K&N cold air intake,plugged resonator ...
Only guage id get is a rail pressure guage, which can go up to 30,000 PSI.. The the Cummin may have a fuel pump, but the Duramax does not! There is NO pressure in a stock fuel filter -- it is all LOW negative pressure--. If you added a vacuum gauge-- that would show you when the filter is starting to be restricted.
DMaxx Diesel Discussion starter. 1246 posts · Joined 2012. #11 · Jul 16, 2013. It's 2 different readings. I got the fuel pressure gauge pretty much to make sure the pump is running right and that the filters are fine. Fuel rail pressure is up at the motor, which is also good to have to make sure that the rail isn't dropping at wide open throttle.
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