Fuel air pressures

[1ranger487vs]

2 b116638

I checked my fuel air pressures. Air side was 95 and fuel side was 80. What is this telling me. Needless to say it is not running well

[lpugh]

Would not run at all with those readings
should be 94 air 109 fuel........14.2 psi spread fuel must exceed air in order for fuel to flow

[EuropeanAM]

+1... switch gauges and try again.

Record pressures:
-At idle
-Under Acceleration
-5/10/15 seconds after shutdown (restart for each time period).

Times beyond 15 seconds are only very remotely helpful.

[1ranger487vs]

What could it possibly be. I’m waiting on better fittings for my gauges. Just starting to look at it. Compressor feels good to me but I’m not an expert. I do have the right manual but was just wondering while I wait what pops up in your mind. Thanks

[Savage]

Diagnostics are a process, so you need to start with the test sequence in post #3.

[lpugh]

What could it possibly be. I’m waiting on better fittings for my gauges. Just starting to look at it. Compressor feels good to me but I’m not an expert. I do have the right manual but was just wondering while I wait what pops up in your mind. Thanks

Here is a source for the proper adaptor hose
Star Products 71319 Small Schrader Hose Assembly with Quick Coupler Plug | JB Tools

[EuropeanAM]

What could it possibly be. ... Compressor feels good to me but I’m not an expert. I do have the right manual but was just wondering while I wait what pops up in your mind. Thanks

Nothing that would permit the engine to run AT ALL with fuel pressure that far below air pressure.

[1ranger487vs]

Thanks so much. As soon as I get good numbers I’ll post them

[1ranger487vs]

Thanks Leon Just what I wanted. Just ordered them