V5 STi Red Label Fuel Pump.

Right them, this as been going on a while now and is pissing me off.

The car will run fine for weeks on end then when I get down to a 1/4 tank some times it won't start.

But, all I do is remove the bolts holding the pump in give it a shake and bingo off she goes!

I have taken the pump out, fitted a new pump from a Type R, new bag, float and replaced the fuel filter.

I have noticed the V5/6 pumps have a small plastic box with a hole in it on the bracket next to the float. It's connectd to the electrical plug by two wires, on the end of which is what looks like a shiney small silver cylinder.

Is this some kind of inertia switch/cutoff?

This seems to be the only thing left to change.Could this be the problem?

I can now get the car seats out and back in in about 15 minutes

 

Hi mate ive got a simular problem on my wrx only that mine started doin it on saturday nite i woz told it cud b the fuel pump or wires goin 2 it but i fink im gonna try ur idea n jus give it a shake if this dont work have u got any ideas????

thanks rik

 

had the same problem with my wrx it was the connectors corroded up inside black connector under the seat . kids bounced up n down on seat sometimes it work then other times not . traced it to the block repacled with connectors and put in a secret fuel cut switch at the same time , take a long wire to the place of your choice then fit switch and return wire back to the one you interupted. problem solved and hidden fuel cut switch as a bonus

 

When you take the fuel filler cap off is the a large amount of air sucked in at all?

 

yea stig everytime i take my petrol cap off it sounds like a dump valves in my petrol tank lol


madscoob.. take a long wire to the place of your choice?? do u mean earthing it?

cheers rik

 

Yes there is

Do you have an idea Stiggy? It was something else I was thinking about It may be a vacuum that is stopping the fuel flow.

 

Stiggy are you there?

 

Happened again last night. It was pissing down with rain so was very annoyed.

Anyone?

 

I have read that some people drill a very small hole in the fuel cap to cure the vacum problem Ian.

 

I sometimes get that air escape noise Ian but I've not had any running issues. Remember the pump came off my type R so it should work with your car fine.

Hope you get it sorted.

 

Hmmmmm, sounds wierd and very annoying .....hope you get it sorted soon Ian.

 

Right then. I have drilled a 2mm hole straight through the cap from the small dimple in the top.

Fulled her up and the first thing I noticed was the fuel gauge seemed to respond quicker it used to take an age before.

Fingers crossed.

 

Still OK.

 

F**K IT'S BACK AGAIN!

 

Looks like its plan b mate,lol.I had the same thing happen to my old fuel pump,it would ocaasionally freeze,and when removed and shaken about & connected to 12 volts it would work. Eventually it just packed up,so i bought a cheap uprated 1,and 6 weeks later that did exactly the same,so just bought a walbro 255 and no probs so far.