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Electric fuel pump problem

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HEL-70Y Officially Full-On Dubber

247 posts · joined May 2005 ·

#431186
Hey all, i have installed an electric fuel pump not that long ago and now i cant seem to drive much faster then 90kmph! I can hit 110kmph on the freeway but if i sit on that for about 10sec my car dies out (from lack of fuel) same deal if i sit on even 80kmph for lets say 30secs-ish. The car runs fine if i plant it from 0 to 120kmph then it starves and stalls. Driving at low speeds i dont have any problems.

I have been told that the fuel pump is fine and can handle it, and that someone using the same pump has hit speeds of 180kmph + and has not had a problem. I was also told to change the fitting in my fuel tank as it could be too small and doesnt let enough fuel into the pump as it is gravity feed. I have done this, put a bigger fitting in and found some improvment but still same problem, only the car lasting a few seconds more at high speeds. I have also lowered the pump more so the hose does not bend up at all (more holes drilled through my body 🙁 )

I am about to put my old pump back on and thought id throw up a post to see if any one has any other options/experiences with this?

Also i was talking to a local mechanic (non vw) and he was saying how great the original vw fuel pumps are and that the eletric one wont make any difference to performance and reliability. What are your opinions on this too?

so off with the new and on with the old??

your help/opinions will be appreciated

Sez
Before you judge someone, you should walk a mile in their shoes. That way, when you judge them, you're a mile away and you have their shoes.

barls Administrator Causer of Chaos and Mayhem

9,473 posts · joined Jun 2004 ·

#431190
i run a rotary pump on chaos with no problems mate and the only reason for running it is the stock 2L pump hits the body in a bug. just a question is the pump below the tank mate? also hows the state of the flexible line ie is it old cause they can disintegrate inside causing a lack of flow
“We all pay for life with death, so everything in between should be free.” Bill Hicks
the chaos project - click me

HEL-70Y Officially Full-On Dubber

247 posts · joined May 2005 ·

#431201
The pump does sit lower then the tank, with all new fuel lines which dont bend up (direct down feed to pump)
Before you judge someone, you should walk a mile in their shoes. That way, when you judge them, you're a mile away and you have their shoes.

aggri1 Insano Dub Head

824 posts · joined Dec 2003 ·

#431224
Checked your fuel filter mate? Basic I know, but hey...

The fitting in the tank sounds bogus to me. If you got enough fuel with the mech' pump, the electric should get enough too. Unless the mech' pump can indeed suck harder.

Don't know dude,
cheers, aurel.

1303Steve Scirocco Rare

8,650 posts · joined Aug 2002 ·

#431376
Hi

What sort of pump is it? Some pumps are suckers and some pushers. Suckers need to be mounted near the carb and pushers need to mounted under the tank.

Steve

HEL-70Y Officially Full-On Dubber

247 posts · joined May 2005 ·

#431467
Fuel filter is new and clean. Fuel pump is a pusher not a sucker. looks like i dont have much of a choice other then putting the old one back on and ugly'in up my pretty engine bay :cry

I dont think it would make a difference that i now have a 1916cc, to me it seems like it pumps to slow, but othes say they have never had a problem *confused* looks like it will going for sale soon (redeem some cash) maybe some one else can make some use of it. Do i have any offers in here? maybe offers for my scat shifter too which i couldnt get working as discussed in http://forums.aussieveedubbers.com/viewtopic.php?tid=45604

Well thanks anyways guys
Before you judge someone, you should walk a mile in their shoes. That way, when you judge them, you're a mile away and you have their shoes.

HotRodMatt If it\'s old or rare - cut it!

3,616 posts · joined Sep 2002 ·

#431470
I'd wait until someone can have a look for you... I've never had an elctric pump that can't cope... Maybe it's in the carbs that the problem lays? Could be one of the needles sticking and the bowls running out....? Electric pumps don't speed up with the engine it'll push to a certain pressure.

Disconnect the line and switch on your ignition and see how much fuel pumps... there will be bloody heaps...

HEL-70Y Officially Full-On Dubber

247 posts · joined May 2005 ·

#431493
i can see how much fuel it pumps through the glass fuel filter, and it doesn't seem that fast to me. My carbs are still new but yes i know that doesnt mean they wont give me problems. The bowls running out sounds right and the needles sticking? how does that happen and how can i find out?

I might take her round to klaack's on sat, and see what they say about it

thanks matt
Before you judge someone, you should walk a mile in their shoes. That way, when you judge them, you're a mile away and you have their shoes.

pete wood 23 Windows of Awesome

6,828 posts · joined Jan 2004 ·

#431519
HEL-70Y wrote:i can see how much fuel it pumps through the glass fuel filter, and it doesn't seem that fast to me. My carbs are still new but yes i know that doesnt mean they wont give me problems. The bowls running out sounds right and the needles sticking? how does that happen and how can i find out?

I might take her round to klaack's on sat, and see what they say about it

thanks matt
Klaacks aren't open on Saturday. But give Hans a call and tell him ya problem. He might have a solution.
"stoopid is stronger than axles"
http://drivingnotpolishing.blogspot.com.au/

HEL-70Y Officially Full-On Dubber

247 posts · joined May 2005 ·

#431527
I thought they were open half day sats coz i went there once on a sat (must of been a special sat)

Anyways just called them (they dont open sats), he thought my buggy was green, i said no gold he said same thing🤪 anyway to the point, they were heaps helpful, to break it down he said i should run a bigger pump and regulator always running two pound pressure. also said that it will cost me about $250 🙁 might go back to old mechanical one until i decide to start blowing more money on things i dont really need.

👍 to klaack
Before you judge someone, you should walk a mile in their shoes. That way, when you judge them, you're a mile away and you have their shoes.