fuel pump mod?

[rsnoble]

Im sorry to have to ask this as i Know this issue has been asked befor, has anyone got any pics of the fuel pump mod and wire (diag) i have had problems with my engine not starting and i have checked the burnt conector that i found out and it goes to the puel pump, i have checked and the loom has not been modified!! im going to make a loom up at work tomorrow and would be good to see a pre pabricated one first?

[NobleGuy]

I have mine upgraded but I'm not sure exactly what was done. Looks like it's just a direct feed from the battery with a relay in the middle, but I might be oversimplifying somewhat .

[rsnoble]

i was woundering if anyone else had put a fuel cut off in the loom, as if the car was involved in a crash the pump would keep running!

[peterguk V6 KWK]

ECU normally switches pump off when rev count = 0, but ignition is still on.... Not sure with the MBE.

[Adrian W]

peterguk V6 KWK said:

ECU normally switches pump off when rev count = 0, but ignition is still on.... Not sure with the MBE.

5 seconds i think, that way it can prime ok.

[rsnoble]

but if the fuel line was cut in a crash am i right in thinking that it would not cut off the fuel!! as ign would still be on!!

[ajg31]

There must be an inertia cut off somewhere on the car?

[peterguk V6 KWK]

rsnoble said:

but if the fuel line was cut in a crash am i right in thinking that it would not cut off the fuel!! as ign would still be on!!

Engine would stall due to no fuel pressure, engine rev. count = 0, ECU switches off pump.

[rsnoble]

but if the pipe was split it would still have fuel pressure so engine wolud no cut, not realy a good idea?

[Adrian W]

rsnoble said:

but if the pipe was split it would still have fuel pressure so engine wolud no cut, not realy a good idea?

If the pipe was split I think it unlikely there would be any pressure, just petrol all over the place for a few seconds.

[rsnoble]

[that realy what i mean a few seconds of fuel in a turbo car is not ia good idea, seems mad


quote=Adrian W]

rsnoble said:

but if the pipe was split it would still have fuel pressure so engine wolud no cut, not realy a good idea?

If the pipe was split I think it unlikely there would be any pressure, just petrol all over the place for a few seconds.

[daddysumo]

An Exhaust manifold is hot enough to ignite petrol or petrol vapour / air mixture so just the same risk really IMO

Steve