Fuel flow problem?

Issues pertaining to the TGB/C30X series engine and driveline issues
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thedoeges
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Joined: Sat Mar 03, 2012 11:16 am
Location: Castle Rock, Colorado

Fuel flow problem?

Post by thedoeges »

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
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edzz
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Re: Fuel flow problem?

Post by edzz »

Just a shot in the dark, what comes to mind is a clogged fuel cap vent.
Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.
roobar_and_custard
Australia
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Joined: Fri Sep 07, 2012 7:18 am
Location: Melbourne, Australia

Re: Fuel flow problem?

Post by roobar_and_custard »

Or blocked fuel filter?
Uli-RT
Germany
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Re: Fuel flow problem?

Post by Uli-RT »

...have you already changed the Filter near the Tank ?
And there is a strainer in the fuelpump.
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thedoeges
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Re: Fuel flow problem?

Post by thedoeges »

I didn't know that there is a filter near the tank. The strainer is clean and new. Where is the other filter?
EmbarkChief
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Location: Houston, Texas

Re: Fuel flow problem?

Post by EmbarkChief »

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.
-1972 710M
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thedoeges
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Location: Castle Rock, Colorado

Re: Fuel flow problem?

Post by thedoeges »

I will check it out. Don't think it was relined.
EmbarkChief
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Re: Fuel flow problem?

Post by EmbarkChief »

Fuel Tank DeLamination viewtopic.php?t=8614
-1972 710M
mopar
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Location: Metrowest MA

Re: Fuel flow problem?

Post by mopar »

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

1974 712M AKA the Banana
1974 710M AKA the project truck
1987 718M Now Sold
1975 Volvo TGB1111 Now Sold
1973 Pinzgauer 712M x2 Now Sold
1963 404S Now Sold
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thedoeges
Posts: 75
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Location: Castle Rock, Colorado

Re: Fuel flow problem?

Post by thedoeges »

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.
EmbarkChief
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Location: Houston, Texas

Re: Fuel flow problem?

Post by EmbarkChief »

Oh snap, I'm so sorry! I wasn't paying attention to the sub forum from my mobile. Disregard :-(
-1972 710M
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