powerboatr
living well in Texas
this is where mine was on my 7.3 very similiar to bryans set up
Fuel Pressure Gauge & Shimming
- Thread starter dpantazis
- Start date
roosterdiesel
Earl needs B100
Ford_Forgotton said:
My original Marshall gauge that stayed under the hood took a dump at about 9 months, the replacement NAPA gauge, zip tied to cowl
, is about 6 months old. They both pulse at idle sometimes.
Thanks for the info Bill!
Tail_Gunner
CRJ & ERJ A&P Mech.
Could the pulsing be a sticky FPR?
I replaced the innards of my FPR when I replaced the fuel pump. No pulsing ever observed.
I replaced the innards of my FPR when I replaced the fuel pump. No pulsing ever observed.
roosterdiesel
Earl needs B100
Tail_Gunner said:Could the pulsing be a sticky FPR?
I replaced the innards of my FPR when I replaced the fuel pump. No pulsing ever observed.
LOL....look at my past posts!
That's my last two steps. I've cleaned the FPR twice, pulled the pump to make sure no crud was on the suction side since I "drank water." Just not sure if I want to go with a stock system yet. I have 108k on the stocker.
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dpantazis
#12
am i going about this the wrong way?
ultimatly, i want fuel pressure in the cab.
for now, i want to read the existing fuel pressure and then shim and re-read.
is there a sensor on the engine already that i can pull with a obd reader instead? that might be easier to deal with for now.
the pulsing issue i think is related to the pulsing of the injection cycles in the fuel system. we know that there is pulsation, we talked about it in the cackle threads.
dennis
ultimatly, i want fuel pressure in the cab.
for now, i want to read the existing fuel pressure and then shim and re-read.
is there a sensor on the engine already that i can pull with a obd reader instead? that might be easier to deal with for now.
the pulsing issue i think is related to the pulsing of the injection cycles in the fuel system. we know that there is pulsation, we talked about it in the cackle threads.
dennis
roosterdiesel
Earl needs B100
Sorry no PID for fuel pressure. There's volume demanded and such but no pressure.
powerboatr
living well in Texas
if you still have your factory check valves/snubbers in the heads, you should not be seeing the injector pulse on the gauge at the fuel filter. you may be seeing the little spring bouncing all over in the fpr.
when we put in the bypass regualtor the gauge would stay rock steady, unless you got on it then it would drop and bounce as the feul pump struggled to keep up. and when we set it to run past 70 psi it had a real hard time keeping that pressure under any load past 1/2 throttle
but then again i drove all the way to work with zero psi a few times to
i am going to have to got dig out my notes
your hurting my head
when we put in the bypass regualtor the gauge would stay rock steady, unless you got on it then it would drop and bounce as the feul pump struggled to keep up. and when we set it to run past 70 psi it had a real hard time keeping that pressure under any load past 1/2 throttle
but then again i drove all the way to work with zero psi a few times to
i am going to have to got dig out my notes
your hurting my head
CHPMustang
Senior Member
Who's the manufacturer there T?Tbar said:
