Lost power while on the freeway!
#41
You're just doing this to test that the fuel cutoff relay isn't preventing the fuel pump from working properly. You can run it like this for a while but risk having the jumper shake loose and stranding you.
Unplug the relay's connector from the relay. Take an insulated piece of wire and connect it across the black / white & black / blue wires in the connector. If you turn on the bike and the pump runs, the relay is prolly bad. It's a solid state item so the only option is to replace it.
Its circled on the attached pic
Unplug the relay's connector from the relay. Take an insulated piece of wire and connect it across the black / white & black / blue wires in the connector. If you turn on the bike and the pump runs, the relay is prolly bad. It's a solid state item so the only option is to replace it.
Its circled on the attached pic
#43
Unplug the relay's connector from the relay. Take an insulated piece of wire and connect it across the black / white & black / blue wires in the connector. If you turn on the bike and the pump runs, the relay is prolly bad. It's a solid state item so the only option is to replace it.
There was a good discussion on the operation of the Fuel Cut Relay a couple of months ago. You can view it here.
Kuroshio, don't take this the wrong way...
#44
#45
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There was a good discussion on the operation of the Fuel Cut Relay a couple of months ago. You can view it here.
Kuroshio, don't take this the wrong way...
There was a good discussion on the operation of the Fuel Cut Relay a couple of months ago. You can view it here.
Kuroshio, don't take this the wrong way...
Kidding That's actually the from the Haynes manual for the F3. The prior assumptions are that the pump is non-functional and fuses have been checked up to this point. If by jumpering the relay's connector the pump operates, then there relay or its section of the wire harness is at fault.
The service manual (Chpt 18, sec 15) goes further into testing, checking for continuity along the wire harness and voltage at the pump (doesn't specify voltage levels). I went through it all the way before replacing my pump after the relay & wire harness passed both diag routines (Haynes and service manual).
Edit:
BTW I replaced the pump before you posted on how to rehab the pump. Murdocity, I'd recommend making sure the pump is at fault before you go spending money on new contacts. A solid state device like the relay should be reliable, as IDoDirt said, but it can be a fault. As can the wiring itself (bad contacts in the connectors, short in the harness, ect). Jumpering the relay is a quick and dirty check of the pump.
Last edited by Kuroshio; 12-30-2009 at 07:51 PM.
#47
Well speaking from experience, here's my best advice: Do the diags before buying parts.
Replacing everything will eventually fix the problem, yes. And burn a hole in your wallet, making you hate your bike. A smooth, methodical diagnostic routine will show you what really needs to be replaced.
When trying to fix my flat spot I cleaned the carbs 3 times, replaced the fuel pump, replaced the fuel filter and rejetted the bike. While the pump was out and the filter was almost completely blocked, they were not the source of the problem I was trying to fix. And it definitely did not need a $129 jetkit.
The flat spot was caused by a bad air solenoid. Which I'd have found before all that if I had gone about things more methodically. Actual cost to fix the flat spot: $0
Replacing everything will eventually fix the problem, yes. And burn a hole in your wallet, making you hate your bike. A smooth, methodical diagnostic routine will show you what really needs to be replaced.
When trying to fix my flat spot I cleaned the carbs 3 times, replaced the fuel pump, replaced the fuel filter and rejetted the bike. While the pump was out and the filter was almost completely blocked, they were not the source of the problem I was trying to fix. And it definitely did not need a $129 jetkit.
The flat spot was caused by a bad air solenoid. Which I'd have found before all that if I had gone about things more methodically. Actual cost to fix the flat spot: $0
#48
Yes, definitely check the contacts first before ordering. Doing the relay bypass will also tell you if the pump can actually run as well. I think the manual has you do that for a flow volume test.
How are you with meter ? Using a meter will help determine if you're getting power to the places you need it to. Good luck and keep us posted.
How are you with meter ? Using a meter will help determine if you're getting power to the places you need it to. Good luck and keep us posted.
#49
#50