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Fuel pump relay

I removed the tank as per the service manual in order to replace fuel filter and air filter. While I was at it I also replaced the electronic fuel valve solenoid with a manual one. Put everything back together and now it won't start. Motor turns over strong but no start. I notice that when I turn the key on the fuel pump no longer activates as it did before. I put everything back together correctly so I'm puzzled. The possibilities I've coem up with are... 1. Removing the electronic fuel valve solenoid somehow caused the fuel pump to stop getting power. I was told I could simply disconnect it, no problem. 2. Could disconnecting the fuel level sensor have caused a problem? 3. Could disconnecting the pressure regulator have caused a problem? Long and involved but I thought I'd ask.

Posted by Anonymous on

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6ya6ya
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Posted on Jan 02, 2017

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  • 2712 Answers

SOURCE: fuel problem

the bike will start but not run for long especially if I roll the throttle a bit. When turning the key and flipping the kill switch to on I can hear the fuel pump. I removed the fuel pump assembly and checked for holes or cracks in the lines and none are present. Does anyone know if the fuel/air separator can go bad? I have tried putting an extra quick disconnect to an extra fuel line to see if I can get any fuel out put and I get nothing. Do fuel pumps get clogged? Any words of wisdom would be great before I run out and buy an new fuel pump.Try running the bike with the gascap open and see to rule out that the air supply is clogged.,,,

Posted on Nov 10, 2008

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  • 2712 Answers

SOURCE: fuel problem

the bike will start but not run for long especially if I roll the throttle a bit. When turning the key and flipping the kill switch to on I can hear the fuel pump. I removed the fuel pump assembly and checked for holes or cracks in the lines and none are present. Does anyone know if the fuel/air separator can go bad? I have tried putting an extra quick disconnect to an extra fuel line to see if I can get any fuel out put and I get nothing. Do fuel pumps get clogged? Any words of wisdom would be great before I run out and buy an new fuel pump.Try running the bike with the gascap open and see to rule out that the air supply is clogged.,,,

Posted on Nov 10, 2008

  • 2712 Answers

SOURCE: fuel problem

the bike will start but not run for long especially if I roll the throttle a bit. When turning the key and flipping the kill switch to on I can hear the fuel pump. I removed the fuel pump assembly and checked for holes or cracks in the lines and none are present. Does anyone know if the fuel/air separator can go bad? I have tried putting an extra quick disconnect to an extra fuel line to see if I can get any fuel out put and I get nothing. Do fuel pumps get clogged? Any words of wisdom would be great before I run out and buy an new fuel pump.Try running the bike with the gascap open and see to rule out that the air supply is clogged.,,,

Posted on Nov 10, 2008

MakisRC51
  • 408 Answers

SOURCE: 1998 suzuki gsxr750 fuel pump inop after replacing filter

You cannot bleed the fuel injection system.Test the pump alone (not on the bike) for sufficient fuel supply.Also check the fuel pump relay.
If all that is ok next time you try to crank the engine (only with kill switch on, the fuel pump primes up) with lifted tank and opened air box, spray a bit of carb cleaner spray towards the throttle bodies.It will help.

Posted on Jun 09, 2009

MakisRC51
  • 408 Answers

SOURCE: zx-7r 1998 fuel pump was disconnected, power wire was cut, how do i reinstall correctly for correct fuel pressure?

This will help, I thinkhttp://www.carlsalter.com/download.asp?p=1008
If not, feel free to ask again any clarifications you may need.

Posted on Feb 04, 2012

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How to troubleshoot a no fuel problem, no fuel at fuel rail in a 2000 olds sillhouette.


First check there is battery voltage to the pump and the pump starts when the ignition is switched on , if not check fuse and relay, check wiring from relay to pump. If ok and the pump is working , check for fuel blockage from the tank inlet to the pump , some have a sock type filter in the tank pick up tube, if all ok remove the fuel filter , switch on and fuel should flow at the filter, fit a new filter, if still no fuel at the rail fit a fuel pressure gauge an check for low pressure , if ok, the fuel pressure regulator may be stuck causing a air lock replace it.

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2. Release pressure from fuel system by removing the fuel pump relay and start the engine and let it die. Crank the engine a couple times after it dies to relieve more of the fuel pressure

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1 Answer

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