THE PORTAL HUB - Pinzgauers, Haflingers, Volvo 303s and more!

Hello,

Here is another problem that just came up. When driving in higher RPMs the engine occasionally throttles back, as if on a governor, or starving. If I just kept the gas pedal pressed, it would consistently reduce RPM and with that, speed as well. Once I am standing at idle, which runs just fine, I can drive for a while before the problem occurs again. It has gotten progressively worse during the last two days. Iginition system is OK, new fuel filter inside glass dome, valves/compression just checked. Looking at the glass dome of my fuel strainer/regulator, it appears that the bottom half inch is always filed with fuel, yet I am not sure if that's enough. The engine ran good before and there was never a fuel regulator adjustment necessary. Maybe its the pump, but I would think that the pump would just give in and wouldn't be intermittent.

Any ideas?

Thanks.

Marcus

Just a shot in the dark, what comes to mind is a clogged fuel cap vent.

Or blocked fuel filter?

...have you already changed the Filter near the Tank ?
And there is a strainer in the fuelpump.

I didn't know that there is a filter near the tank. The strainer is clean and new. Where is the other filter?

Has you tank been re-lined? My liner started peeling off and it plugged my pickup tube with a piece the size of a leaf.

I will check it out. Don't think it was relined.

Fuel Tank DeLamination viewtopic.php?t=8614

That is a problem with Pinzgauers never heard of it with a volvo.

I checked the filter and there are no particles caught. I also blew out the fuel filler neck vent tube, there was dirt in it, and increased the fuel pressure on the Filterking pressure regulator. He's running great so far, but if the problem comes up again, I will check the tank, fuel lines, and maybe even the fuel pump. Just don't think it's anything mechanical, as the truck has only 23000 original miles on it, and everything else works like a charm.

Oh snap, I'm so sorry! I wasn't paying attention to the sub forum from my mobile. Disregard