EuroVan fuel pressure really high

[ripcord]

So I'm trying to diagnose an issue with my brother's Winnebago Rialta which is built on 95 EuroVan chassis. It has the gas 2.5l 5 cylinder engine.

The condition is an intermittent crank, no start condition. It will sometimes start, but die soon after, especially if you try to drive it. I narrowed it down to fuel delivery. Spark is nice and hot and a little toot of ether make it fire right off until the either is consumed. After sitting a while it will start and idle again. Eventually.

When I got it, the battery was for knob dead, but it charged and the alternator is putting out a nice 14.4V.

First I tested the fuel pump relay because those are supposedly a common failure point, but it checks out good. When I apply 12v across the control pins, I get an audible click and 0 ohms across the power pins. It doesn't get hot while running, and I see 12v on the positive control pin with the key on.

Second, I pulled a fuel line off at the engine and rigged up a fuel pressure gauge. To my surprise, I'm seeing 86 psi at both fuel line at the regulators The spec that I found online says 36 or 40 psi.

Anybody have any experience with these? I'm starting to think it's not fuel delivery.

 

[ripcord]

I finally found the pre-OBDII ports in this thing and retrieved a single code: P1344. Ignition Coil Power Output Stage 2 Short to B+

 

[clinebarger]

That's near dead head pressure, Guessing no electronic fuel pump speed control?

Bad regulator or a restriction on the return side?

Not remotely familiar with Volkswagens!

 

[ripcord]

That's near dead head pressure, Guessing no electronic fuel pump speed control?

Bad regulator or a restriction on the return side?

Not remotely familiar with Volkswagens!

Me, either. I'm not even 100% sure I got the pressure from the right place or the right way. There's no schrader valve to measure from. I had to hose clamp my pressure gauge inline at the rail.

I did manage to get the blink codes and got 1344 which is "ignition coil power output stage 2 short to B+." I'm tempted to throw a new coil at it.

 

[clinebarger]

High FP like that can cause the engine to flood....But would also run pig rich when it does run.

As long as you are testing inline or "Tee-ing" into the system....Dead Head testing a fuel pump has it's place though.