What is the expceted Fuel Rail Pressure when driving

[tomtom72]

Originally Posted by QB93Z

My problem turned out to be injector related, not the fuel system. One problem that complicated the trouble shooting was that the fuel pressure tester I was using has a problem with the fitted that attaches to the schrader valve on the fuel rail. When the fitting was screwed on tight, the pressure gauge would not display fuel pressure. Very annoying.

Jim

I have one of those models also....very annoying!

[scottfab]

Originally Posted by QB93Z

My problem turned out to be injector related, not the fuel system. One problem that complicated the trouble shooting was that the fuel pressure tester I was using has a problem with the fitted that attaches to the schrader valve on the fuel rail. When the fitting was screwed on tight, the pressure gauge would not display fuel pressure. Very annoying.

Jim

Wow, makes sense for the code 55 with an injector problem. I suppose my attaching a fuel pump to this thread is dubious. Oh well, someone searching for "fuel pump" will hit on it.

[QB93Z]

Originally Posted by scottfab

Wow, makes sense for the code 55 with an injector problem. I suppose my attaching a fuel pump to this thread is dubious. Oh well, someone searching for "fuel pump" will hit on it.

The tech manual trouble shooting chart for a lean condition starts out with fuel system diagnosis, so I eliminated that first before I pulled the plenum to look at the injectors and wiring.

Jim

[Dream car 90]

I'm also showing the infamous code 55 , I replaced the fuel filter and checked fuel pressure for primary and secondary fuel pumps both read @ 50 psi , so next step is to remove plenum and tackle the injectors .