Stock fuel pump able to handle 45mm DCOE???

**GoLfMan** · 14-02-2008, 06:43 PM

been asking around and i would like to know if the stock mk1 fuel pump can handle a 45mm DCOE weber that i have on my car...

on my car it starves out at 5000rpm and wont go past that at all...

any suggestions?! i do have an electric fuel pump but i want to stay mechanical just for simplicity

**Golf Loon** · 14-02-2008, 06:48 PM

Should be able to handle it mate.
Do you have a reducer in the return line?
How about a decent sized filter before the pump?

**GoLfMan** · 14-02-2008, 07:00 PM

Originally Posted by Golf Loon

Should be able to handle it mate.
Do you have a reducer in the return line?
How about a decent sized filter before the pump?

really?! i thought so...

a reducer where should i look for this, and i havent looked if there is a decent sized filter before the pump.

does the fuel pump have a filter?

i have a brand new fuel filter in the engine bay however

**Jarred** · 14-02-2008, 08:23 PM

dude, you have a 40mm dcoe that last time I checked?

just toughen up and put in the electric one.

**GoLfMan** · 14-02-2008, 08:40 PM

Originally Posted by Jarred

dude, you have a 40mm dcoe that last time I checked?

just toughen up and put in the electric one.

whatever!

why create extra work where its not needed, the mechanical pump is more than adiquate there just is something wrong with mine i recon

**Golf Loon** · 14-02-2008, 09:24 PM

Electric is better if mech pump is old and broken.

The return line needs to be small, just as an overflow. If you have no return, or the line is too big, you wont get enough fuel at the carby.

Even a bead or something in the line to reduce flow will work.

**gldgti** · 16-02-2008, 08:36 AM

hey mate - like people are saying a working mech pump will provide enough fuel for your needs.

a reducer, like a small diameter section of return line, can be used to keep the fuel pressure up to the carb, but in my experience the 1/4" return line is good enough.

if your pump isnt working great (which does happen) you might find you need to replace it.

when loon said about the filter - he means is your fuel filter a larger volume one or a small volume one.... but this shouldn't matter too much, since the float bowl in your carbie ought to take care of this requirement.

one possibility is that your carbie float level is incorrect. i would suggest that adjusting this yourself might cause you more complications than you have already, so if you want to try this, you might benefit from taking the carbie to a specialist carburettor guy and get him to check the float level.

**Valver.** · 16-02-2008, 10:53 AM

Lose the mechanical pump and fit an electric one. If you already have one, I don't see what the question is here!! You could have it plumbed and wired up in an hour or two

**Preen59** · 16-02-2008, 03:43 PM

I have a 44IDF on the 1.7 in my car at the moment and i've never had fuel starvation probs. The mechanical pump is more than enough. You only need to keep the float bowl full.