Club 80-90 Forums

hi after some advice i have a vw t25 2.0 ive replaced the fuel tank, fuel hoses, filter and pump (pierburg from brickwerks)  but i cant get fuel upto the carbs i can suck fuel through the filter and ive left the hose off carb to purge air but the fuel goes from carb but dosnt refil in the filter? i have 1/4 tank of fuel and the arrow on the pump is with the flow of fuel from the tank to carbs, i tried it with a cheap £8 ebay pump and it worked a treat just as it should for ten mins until pump went, im a bit stuck now so thanks for any advice 

The filter won’t fill with fuel don’t worry about it , if there’s fuel in the carbs then that all you need

Have you put some fuel down the carbs and had it running ? Once it runs it’ll pull the fuel up , you cant turn it fast enough on the starter until its through then it’ll be alreet

Hi I've got a electric pump would that be the same? As in when turning over with something in carbs, will it pull fuel through. I've had it running but on the old mechanichal pump which wasn't strong enough to get enough fuel through. I've put a hose in a can and had the electric pump pull fuel up into a jar so it does work but not when fitted I've tried purging air out but with no luck.

Obvious to me, but when fitted, is the pump wired up the same as when pulling from the can?

If yes, then is the tank fuel stub blocked.?

If no, then wire the pump the same as you did with the can.
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The injections use a relay to power the pump.
Normally taking a signal from the ecu to control the relay.

A lot of these mechanical to electric pump conversions use a similar method but using an rpm signal (No 1 terminal of the coil) through a special relay that requires the pulses to operate.

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You could just use an ignition live feed, but that is not quite as safe if you have an accident or fuel line failure.
The fuel will continue to pump as long as the ignition is on.