XJTripp
NAXJA Forum User
- Location
- eastern North Carolina
I have a 2001 Cherokee 4.0. The fuel pump check valve became ineffective and the thing took 2-3 tries to start every time. I basically wore a starter out before I took action. I put in an in-line check valve just like I had done previously with my 89 and it worked like a charm. Starts at the touch of the key --- for one day---. Today I was driving and smoke started pouring from the engine bay. Seems the fuel damper on the fuel rail sprang a leak and discharged like a shower head onto the intake. Luckily no fire.
I don't see how, but it must be related. Anyone else installed a check valve in their fuel line?
Possible theory - the pressure regulator is on the fuel pump, have I isolated it from the regulator and thus caused an overpressure condition on the fuel rail? Seems like when the pump is pumping the check valve would be open, right? So this shouldn't happen- right?
Other theory, the damper is just bad and I need to replace it and try again.
Anybody have a 2001 or 2000 that they added a check valve to?
I don't see how, but it must be related. Anyone else installed a check valve in their fuel line?
Possible theory - the pressure regulator is on the fuel pump, have I isolated it from the regulator and thus caused an overpressure condition on the fuel rail? Seems like when the pump is pumping the check valve would be open, right? So this shouldn't happen- right?
Other theory, the damper is just bad and I need to replace it and try again.
Anybody have a 2001 or 2000 that they added a check valve to?