Fuel pump again...

[r30]

Hey everyone,

Just recently had the fuel pump fixed in my R30. Thought all the problems would be over. When the pump was not connected to the fuel line, it pumped out petrol. When it is attached to the fuel line it still pumps, but nothing seems to get to the engine. You can see the petrol in the fuel line, just before the fuel filter. I took the filter out, and you can blow through it. What would this be? I don't know much, but it kinda sounds like the pressure isnt big enough or something. If anyone knows or has had this problem, I would be happy to hear about it.

Thanks

Adam

[Matty T]

It sounds like the metal line that runs under the car may be pinched / blocked.

Have a careful look at the condition of the line, from fuel pump to fuel filter. There may be some metal shields in the way - remove them. Spend the 5 minutes to do this properly. What you would be looking for is any sign that the metal line has been crimped (from a rock, jack or the like).

All looks good? Disconnect the hose from the fuel pump and disconnect the fuel filter and blow through the pipe from the engine bay end. First, fuel should run out of the line of its own accord. Blow through the line from the engine bay end, just to be sure. There shouldn't be resistance. If it feels like you are blowing up a balloon, you have your answer. Oh, and it would probably be the reason that you old pump karked it too...

[discopotato03]

I know it sounds silly but make sure you'r not pumping into the return line (hoses wrong way round) as the injectors will be on the wrong side of the regulator .

[blind_elk]

Have you tried with the fuel hose disconnected from the fuel rail?

I recently replaced mine, and it took quite a while to get fuel at the fuel rail. I disconnected the hose from the rail, and had to do several "primes" of the fuel system (just switch ignition to ON, you get that initial 5 sec running of the pump, then OFF / ACC, then back ON).

[r30]

Hey Guys,

Found out the problem. Had a mate comeover, after scratching our heads for a while :bonk: , we decided to place the pump right near the motor. Anyway it turned out to work. The fuel pump is working, but does not have enough pressure to reach the engine. So have to buy a new fuel pump......

ADAM

[machg]

I'd still check your fuel lines though....just in case.

machg

[blind_elk]

EFI pumps are meant to "push", not "pull", ie they need to be near the source of fuel.

[r30]

Hey,

In another thread of mine, some people suggested to buy a VL TURBO PUMP, as the nissan ones were to $$$. Does anyone know if there is a difference between a TURBO pump and a normal pump? As I can't really find any turbo ones...... My car is controlled by an EFI.... Thanks

Adam

[blind_elk]

It means "a pump for a VL Turbo", not "a 'turbo' pump for a VL".

[r30]

Ohh....

Thanks for clearing up that little misinterpretation of mine..... Makes things a lot easier..

Adam