help with LS1 fuel system
#1
help with LS1 fuel system
Installed Ls1 into 80 vette. LS1 from an 01 SS camaro. Stock except for cam.
Fuel pressure gauge on rail reads 35-40@ idle. That seems low? Pump (acdelco EP241) is rated for 50psi. Filter/regulator is from a c5 vette (AC Delco GF822)
ignition on but not running engine pressure jumps to 40 then drops to 10psi and ends up at 0psi. Leaking injectors is what I am thinking.
WOT, 1st gear, higher RPM you can tell it cuts out. Starting the engine also seems to start like a carb engine. Cranks multiple times before firing which fuel injection should not do.
So where should I start? Fuel pump needs to be more around 60psi? New injectors and maybe another fuel filter? Why am I dropping 10+PSI?
Any help is appreciated
Fuel pressure gauge on rail reads 35-40@ idle. That seems low? Pump (acdelco EP241) is rated for 50psi. Filter/regulator is from a c5 vette (AC Delco GF822)
ignition on but not running engine pressure jumps to 40 then drops to 10psi and ends up at 0psi. Leaking injectors is what I am thinking.
WOT, 1st gear, higher RPM you can tell it cuts out. Starting the engine also seems to start like a carb engine. Cranks multiple times before firing which fuel injection should not do.
So where should I start? Fuel pump needs to be more around 60psi? New injectors and maybe another fuel filter? Why am I dropping 10+PSI?
Any help is appreciated
#2
TECH Enthusiast
Have vette filter/reg &rail gauge also,should read 58psi. Key on, engine off, pump should run for I think 10 seconds, then shut off. There is also check valve in pump that can leak.
Googled that pump #, it is listed for gen 1 engines, which means probably, NOT enough pressure.The aftermarket version of that pump, such as the holley I have, would be a good replacement pump. With low pressure, fuel will not atomize properly , not start properly ,& of course cut out on demand. I,d correct this first before blaming injectors.
Googled that pump #, it is listed for gen 1 engines, which means probably, NOT enough pressure.The aftermarket version of that pump, such as the holley I have, would be a good replacement pump. With low pressure, fuel will not atomize properly , not start properly ,& of course cut out on demand. I,d correct this first before blaming injectors.
#4
So for sure a pump but wonder which one will work with my fuel assembly. I chose the one I did cause street and performance used it in the LS3 into 82 vette. http://www.hotrodlane.cc/PDFFILES/Bo...ck%20Vette.pdf
5th page down.
What holly pump you use?
5th page down.
What holly pump you use?