#Pressure regulator for ppe fuel pump cracked#

The PPE valve is actually just a slug with a hole machined in it and therefore always bleeds off a little fuel to prevent damage. The stock fuel rail pressure relief valve has a spring tensioner which keeps the valve closed under normal operating conditions but pops open when rail pressure spikes to avoid damage. My guess is that the PPE fuel rail race valve is the reason. When preforming the return rate test I noticed that when I turned the key to the accessory mode which engages the lift pump IвЂ™d get a slow stream of fuel coming out of the return line to the tank. Tested return rate on injectors + CP3 w/ 15 second crank test ( ) and it came back at 70ml ( <100ml is normal ) Visual inspection of all the hoses and I donвЂ™t see any kinks / obstructions.Д¬hecked engine oil and it is clean (no diesel in oil) The filter head is new and primer button is always firm so I donвЂ™t suspect any leaks IвЂ™ve dropped the tank to check for debris / obstructions and cleaned it ( nothing there it was clean to begin with ) IвЂ™ve verified low side fuel pressure idle to be 15PSI w/ gauge at port near alternator. IвЂ™ve recently replaced the fuel filters at the lift pump and filter head. When commanded 23k the actual is right there at 23kД«ut on large tune (+230 HP Max Effort) at WOT the rail pressure drops to between 14k and 16k depending on RPM. On stock or tow tune the tuck will hold rail pressure at wide open throttle no problemвЂ¦

#Pressure regulator for ppe fuel pump cracked#

New Fleece CP3k installed this year ( itвЂ™s a modded LBZ CP3 pump w/ reg remapped by tune )ДЄirDog 165 4g lift pump cracked up to about 15 PSI at idleД¬AT 2 micron fuel filter ( ~4 months old ) Hopefully this may also help someone else out in the future My name is Courtney and I'm new to the forum but I've got a puzzler that I've been trying to diagnose / fix and I was hoping someone with more experience could help me out.