RE: Fuel Pump POWER SUPPLY problem

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RE: Fuel Pump POWER SUPPLY problem

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RE: Fuel Pump POWER SUPPLY problem - 4/13/2007 12:05:40 AM

oldschoolCBR

Posts: 59
Joined: 1/25/2007
Status: offline

The yellow wire that goes to the fuel cut relay get's power as soon as the key is switched on, just like everything else (main black wire that goes to the relay, so it seems all 3 should be jumped togeather, but I want to find out from someone that has done this successfully already before hooking it up (dont want to fry anything)

(in reply to oldschoolCBR)

Post #: 16

RE: Fuel Pump POWER SUPPLY problem - 4/13/2007 8:06:39 AM

KCITYRIDER

Posts: 14
Joined: 1/5/2006
Status: offline

The relay will does not trip, but cuts signal to the pump so the engine can not climb any higher in rpm. Once the key is turned off then back on, it will supply the pump with the signal again. I know the manual does not talk about it, I talked to my frien who has been a Honda Motorcycle for quite a long time, and he explained it to me, basically it is a basic form of a rev limiter. Hope this helps.
Kcityrider

(in reply to oldschoolCBR)

Post #: 17

RE: Fuel Pump POWER SUPPLY problem - 4/13/2007 6:29:28 PM

oldschoolCBR

Posts: 59
Joined: 1/25/2007
Status: offline

All this because the bike was run with the petcock off, died at the end of the street (probably from running out of fuel in the bowls) and BAM, cant get the damn thing running again.

I guess I should see if the carbs need cleaning, the plugs and all filters are BRAND new, less than 100 miles on everything. I doubt the gas "went bad" in the 3 weeks it has been sitting for but ill change that as well.

(in reply to KCITYRIDER)

Post #: 18

RE: Fuel Pump POWER SUPPLY problem - 4/16/2007 9:56:13 AM

oldschoolCBR

Posts: 59
Joined: 1/25/2007
Status: offline

Fixed the problem(s) (yes, 2 things here). 1. The fuel pump cut relay was bad, and jumping it did work (the 2 black wires). I didn't need the fuel pump I bought, but hey, now I have a spare.

The main problem was this: Remember when I said my tank had a ton of rust in it and I sealed it? Well, whenever I drove it and stopped, the extra dissolved rust that was in the fuel would sit in the bowls of the carbs and apprently build up, and when I ran the bike dry with the petcock off, it sucked all that crap in. When my roommate and I took apart the carbs, 2 of the pilot jets were completely clogged and the others you could barely see through. My Clymer manual was very good in terms of directions to clean the carbs, but we had a little work putting them back togeather because the main rail they attach to bends easily and there are these little springs for the carb syncing that we were putting in on the wrong side of the throttle arms which was keeping the intake flaps partially open, but it was easy to see that I just installed them on the wrong side.

The bike runs smooth and starts right up now. All I have to do is readjust the throttle (take the tank, airbox off ect) because it's not snapping back after I let it go and I did lubricate the throttle cables.

ALMOST there!

< Message edited by oldschoolCBR -- 4/16/2007 10:58:15 AM >

(in reply to oldschoolCBR)

Post #: 19