- Apr 4, 2003
- 4
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I have been having some long cranking times when starting my 93. It will start it just sometimes takes a while to do it. It runs fine except the idle is a little rough.
I just checked the fuel pressure and when I turn on the key but do not start the engine it is 38 psi which is ok. The problem is that most of the time after about a second or two the pressure will drop to 0! Sometimes it will stay at 38 psi. I start the engine and it is at 33 psi which is ok. I shut the engine off and it stays pressurized without dropping for several minutes at least (I quit checking after a few minutes.)
Does anyone know what is wrong? Where is the fuel going to? I know that this is not normal because of reading Charles Probst "Ford Fuel Injection & Electronic Engine Control." I had another problem several years ago that I measured the fuel pressure when trying to solve it and the pressure never drop to zero. Check valve in fuel pump? Fuel pressure regulator?
I just checked the fuel pressure and when I turn on the key but do not start the engine it is 38 psi which is ok. The problem is that most of the time after about a second or two the pressure will drop to 0! Sometimes it will stay at 38 psi. I start the engine and it is at 33 psi which is ok. I shut the engine off and it stays pressurized without dropping for several minutes at least (I quit checking after a few minutes.)
Does anyone know what is wrong? Where is the fuel going to? I know that this is not normal because of reading Charles Probst "Ford Fuel Injection & Electronic Engine Control." I had another problem several years ago that I measured the fuel pressure when trying to solve it and the pressure never drop to zero. Check valve in fuel pump? Fuel pressure regulator?