crusherdrivinfool
12/16/2007 11:57:25 AM
ok I hope I am getting close to getting this thing fixed.
but the problem I have now is that when i first turn the key on the pressure jumps up to neer 50 but soon as the pump shuts off it drops rapidly and will only come back up if i crank the motor over.
What could cause the pressure to drop like that?
I had no problems with the pressure befor but had a bad injector so I took it all apart and replaced the injector put it all back together and now it just cranksand dose not start.
z28pete
12/16/2007 5:42:36 PM
The pressure is under control of the pressure regulator, and is supposed to drop about 10 PSI after the engine starts. However; it is supposed to hold at the lower pressure once the engine is turned off. There could be a bad check valve in the fuel pump, a bad pressure regulator, a leaky injector, or a plain old fuel leak.
