If you've seen my last couple of threads you will know that I have recently re-fitted my engine and am in the process of changing all the fuel pipe work and breather pipes. Next up for me is to fit the tank to fuel pump pipe. I've been doing a bit of research online as I'm not convinced that my pipe where routed in the correct positions originally and I have noticed some talk of a hard line going through the tinware to the left hand side (as you look at the engine) whereas my fuel pipe had no hard line and was routed throughout the right of the tin, behind the fan housing and around the the pump. Can any one shed some light on how it should be done or is it as fact that as long as its not bent and near a heat source it should be fine?
r9 pipe comes off tank spigot, over top of gearbox to other side via filter, then connect to hard line and through tinware hole which is hidden left bottom behind the manifold end, then back to r9 pipe round front to top spigot on fuel pump
one of these then? http://www.vwheritage.com/vw_spares_Fuel-pipe-Metal-113127521A_act_shop.product_pID_84538.htm
we must be at same stage, did mine this eekend! thays the one i used as i had it from years ago but never fitted it. previously i had just a straight bit of pipe there that worked fine. howver i now HAVE FUEL STARVATION PROBLEM SO MAY TRY THE OLD STRAIGHT BIT AGAIN. AS ONCE THAT NEW PIPE IS FITTED IT LOOKS LIKE AN AWKWARD ROUTE FOR THE PETROL AS ITS BENT IN A U SHAPE. IM NO EXPERT THOUGH SO THAT COULD BE CRAP!
There's no reason why the shaped metal fuel pipe should obstruct fuel flow (unless it's blocked). Don't forget to fit the grommet where it goes through the tinware.
YEAH ITS A BIT OF A LONG SHOT, BUT AS THE FUEL HAS TO TRAVEL DOWN THEN UP AGAIN THROUGH THAT METAL PIPE ,I WONDERED IF IT WOULD SLOW OR STOP THE FLOW? GRABBING AT STRAWS REALLY!
You are grabbing at straws . The fuel pump is more than capable of pulling fuel through and the tank's higher than the engine anyway. I'd fit the metal pipe (although you may have to take the engine out to fit it). I hate the T2 customs "short bit of pipe thing". Don't forget the grommet, or the tinware will saw its way through the pipe. In the meantime: check the pump's working and the hoses are connected the right way round. Pull off the outlet pipe, stick it in a jam jar and get an assistant to crank the engine. Fuel should come out in healthy spurts if the pump's working ok.
when you say fuel starvation, do you mean that the float bowl isn't filling up properly or that very little fuel is coming out of the line AFTER the pump?
it is better when you take the pipe off the fuel pump and there is petrol tank end ,if your fuel pump in under par it will have difficulties ,I had crud in the tank so ever so often i had starvation problems...
Down then up again? The metal pipe should remain roughly horizontal around the fan housing not over the top of it. Pics of what you've done please, you might have made an air-lock.
^what Zed said. The metal pipe comes around the fan housing horizontally on the LHS (viewed from the rear), clips in to the LHS plug lead holder and ends up pointing nicely at your fuel pump.
Can't get a photo at mo, but basically it's the pipe below, but I have it so that the two ends are upward pointing, and the middle lowest section going through the tinware. Hope that makes sense!
Cheers for the helps, I shall horizontalize my pipe among other things Sorry for causing a thread hijack mr icepug
id be tempted to forget the metal pipe and joints, use a good quality pipe straight from the tank to the filter[under gearbox] then straight onto the pump a large grommet in the tinware and a piece of rubber pipe as a sleeve on the fuel pipe this will be more than enough protection..
The standard fuel pump can work up a fair vacuum just sucking air. Enough to suck and hold a cutoff solenoid valve closed even if the power is on. This happened on Sunday to my bus. There is no way any loop you can fit in the engine compartment will starve the engine of fuel unless there is a blockage or the fuel pump is broken. As the bore is small the air will get pulled through and then all that the pump sees is the pressure difference caused by the difference in height of the carb and the height of the top of the fuel in the tank minus the pressure drop caused by the rate of flow through pipes, filters, piles of rust and fuel sender stickers.
