Hey JRL:

The check valve ended up right in front of the tank, a couple inches into the soft line.

jblackburn: I ended up punching out the valve plunger, since there was no way to get it apart and just put the body back in line to keep the length intact.

I've not been able to get my friend's fuel ...

jblackburn:

Had an interesting conversation tonight with our helicopter mechanic. He's spent quite a lot of time on newer model cars as well.

He's of the opinion this vehicle has a "returnless" (no return line) fuel system. I thought the second line I was seeing under the car was the return line ...

jblackburn:

Thanks for the fast reply.

So is the answer here to remove my in line check valve, because of its location in the system, as a test? I have access to a fuel pressure gauge to duplicate what the shop is doing Re watching the pressure overnight.

The hard starting earlier could have been ...

Hello:

Car has 175K miles. Had a hard starting problem about 6 months ago and I installed an external in line fuel check valve. Car only hard started once since then. Two weeks ago, I had a hard start, eventually starting and running OK. After some research, replaced the camshaft position sensor ...

MIJ:

Thanks for the picture and I'll look for it.

I took the car down to the local independent Volvo service guys and they replaced the immobilizer. They also timed the fuel pressure gradient after shutting the car off and said it held pressure well enough, but if the immobilizer repair didn't do ...

MIJ:

Ozark Lee suggested I post over here because the engine, a B5244T, seems to be closer to a 2001 XC - no fuel pressure regulator. He thinks it might have a fuel pressure sensor, something that apparently came late in model year 2000 and subsequent.

He also sent me an illustration of the fuel ...

Hello:

Our 2001 XC has just begun an odd behavior. When I turn the ignition key, it cranks right up, then immediately dies. It does that a couple of times, then will not light off at all. In the span of the next five minutes, I try cranking it a few times to no effect. Then the next time, it fires ...

Lee:
I'll head on over there as you suggested.

One question though: You have an illustration of where that pressure sensor might be? It's referenced in the one you posted but off to the side.

Thanks again,

Lee:

What I have is the lower part of the illustration. The only connections under the fuel bar are the damper (#21) and the delivery pipe (#23). And the wiring for the injectors.....

Lee:>That is very low, it could either be the pump or the fuel pressure regulator. To figure out which one it is pinch off the fuel return line and watch the pressure. It should jump up quickly if the pump is good - don't let it get over 80 PSI.

Before I went looking for the pump and filter (these ...