Sorry I know this is a cross post, but I REALLY need some advice (time
sensitive). I won't make this a habbit, I promise...
I have a 1999 K1500 Suburban, That I am having fuel pressure issues
with. If the fuel rail is bled down, the fuel pressure does not come
up, until after I crank it. I am not hearing the fuel pump, when I
first put the key to run, prior to starting. I know there is a circuit
that runs off the oil pressure switch, but I know little else. There
has got to be another circuit, that when the truck ignition key is
first placed to run, before the engine turns, causes the fuel rail to
pressurize to the 60-66 psi that the book keeps talking about.
I got to get this thing going. My wife's mother just passed, and the
other cars I own are really not worthy to be in the funeral procession.
Any help would be greatly appreciated. I replaced the fuel filter and
pump about a year ago.
I can actually get the suburban running, if I "prime" the air horn with
about a 1/4 cup of fuel, but would hate to take it on the road this
way. Friend has a 1998 Chevy truck. We swapped fuel relays, under the
hood, just to see if this would help - No Joy.
Thanks in advance for any info,