zx750-p2 (zx7r) Fuel Problem :(

Taylor79 · Borekit Bruiser Joined: 10 Dec 2007 Karma :

Hi just wondered if any one could help.
I think my fuel pump is knackered,My bike runs great when the tank is full of fuel but twice when the fuel is getting low the bike has spluttered then died and refused to start. On start up i can not hear the fuel pump make a noise like i think its supposed to.
Just wondered if the bike would run fine with a full tank if the fuel pump was not working any help would be great thanks in advance Smile

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Sorry Officer i thought you wanted to race!

Last bike 1995 suzuki GSF600 Bandit current bike Kawasaki ZX750-p2

andym · World Chat Champion Joined: 16 Nov 2010 Karma :

Quick answer would be not to let the fuel get too low.

As for the fuel pump, I thought it didn't really make a noise unless it was empty then it clicked... also when the bike is turning over the noise of that usually is louder than the buzz of the fuel pump.

Fairly easy to test if the pump is working though, disconnect it from the carb, disconnect the plug and connect it straight to the battery... if you get petrol pissing out the pipe you removed from the carb then it should be fine. (I always thought the pump was just there to start the petrol then gravity takes over when there is enough pressure... that's what I read anyway)

Taylor79 · Borekit Bruiser Joined: 10 Dec 2007 Karma :

Cheers Andym will try that today Thumbs Up

____________________
Sorry Officer i thought you wanted to race!

Last bike 1995 suzuki GSF600 Bandit current bike Kawasaki ZX750-p2

0ddball · World Chat Champion Joined: 15 Jul 2005 Karma :

stickybackbob · Trackday Trickster Joined: 23 Mar 2013 Karma :

I run a ZXR750H1 which uses a very similar engine. I was getting a problem of fuel starvation when overtaking even with a full tank. Turned out the fuel pipe was collapsing as it ran fine on reserve.

A friend also had an H1 that would tickover ok but was not rideable. After plenty of mucking about, we found that the fuel pump relay was at fault.

Try what the guys above have suggested to check the fuel delivery and work back from there. If the pump motor chatters when it has power but no fuel, it could be the relay. Simple and cheap to replace Smile

Taylor79 · Borekit Bruiser Joined: 10 Dec 2007 Karma :

Cheers for all the help and advice (yes switching it to reserve does not help when fuel is low i did think that was the problem at first)
____________________
Sorry Officer i thought you wanted to race!

Last bike 1995 suzuki GSF600 Bandit current bike Kawasaki ZX750-p2