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Old 12-06-2009, 02:44 PM   #1
allthrottle
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Starting issues, need advice.

I'm having trouble getting my '98 Cbr600 F3 to start. The problem started showing about two weeks ago, first thing in the morning. I'd start it(fired easily), let it warm up for a minute or two, then head off. Half a block down it would start sputtering and get worse as I gave it throttle, so I'd pull over, it would die, start back up after a minute and seem fine.

3 days ago it got me two blocks down but didn't seem 100% healthy. Stopped at a light, take off and it acts like it's running out of fuel. I pull it into a Bank of America parking lot where it dies. I wait a minute, try to fire it up but the battery quickly dies after 2-3 seconds of cranking. Work's only a block down and I can follow the parking lot and alleyway to get to it, so I push it there where I know it won't get towed and will be on camera. Girlfriend comes to get me when I get off, hook up the jumper cables and it fires up fine. Runs 5-10 seconds, dies, and has been that way since.

I know the battery's gone and needs replaced, but shouldn't it still start when jumped? Cranks fast and sounds healthy, just won't fire. It'll occasionally sound like a cylinder or two lit up, but that's it. I pulled the plugs last night hoping some of the gas in the cylinders would evaporate(seems pretty flooded), and cleaned/re-gapped the plugs, but that didn't seem to make a difference.

Any suggestions/ideas would be great. I don't want to start throwing parts/money at it blindly, and most of my cash the next check is going to Christmas presents, so having it towed to a shop is out of the question right now.

Thanks
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Old 12-06-2009, 05:03 PM   #2
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First off if the battery is gone you'll need to address that.
Afterwards make sure the fuel pump is working.
Let us know what you find and I can advise from there.
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Old 12-06-2009, 05:10 PM   #3
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clean the carbs,the cold weather probably killed your battery,i had the same exact problem with mine,and it turned out to be too much gas in my oil
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Old 12-06-2009, 06:31 PM   #4
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^^^what Patrick said.

If the bike is on jumpercables the battery is bypassed. You need to determine if its a charging problem or a fuel issue. A dead battery would only effect the bike if its off and wont restart. The charging system should be able to sustain the bike while riding.

If it cranks immediately after it dies(fast) the battery should be ok since it is able to sustain a charge. If it doesnt but will crank after the battery sits, the battery is pulling the electrical load of the bike instead of the charging system and when it rests, the acid is resettling/the battery increases in charge before it is drained again from lack of charge.
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Old 12-07-2009, 12:24 AM   #5
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Picked up a new(er) battery from Civicious a couple hours ago, didn't help. Unplugged the fuel line going from the pump to the engine and left it open while I cranked. Didn't see any fuel spit out and couldn't hear or feel the pump try to do anything. Removed the pump and ran a couple of 14ga wires to it with an inline fuse straight to battery, got nothing.

Did a little bit of searching for any other ways to test the pump/relays and came across a few posts about bypassing the pump and running a hose straight from the carb fuel feed T to the tank. Tried that, and it runs! Ran it around the apartments a bit and it seemed ok at low rpm. Should I even attempt to ride it around like this? It felt ok, but at what point will the gravity feed stop doing the job?
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Old 12-07-2009, 12:34 AM   #6
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You should really replace the pump. Check with Sams Cycle Salvage and see if they have one. His son is Romeo36 and he posts here.
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Old 12-07-2009, 12:53 AM   #7
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I'll just leave it parked then. It won't hurt me to walk the 3 blocks to work until payday. I need to get it over to your place anyway and have someone look it over. I should've done that before I picked it up, I've been coming across a bunch of weird/rigged stuff the last few days.

Is this the same place as Sams Cycle Salvage? http://sams-cycles.com/

And thanks for the help. I'll update when I get a working pump for it.
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Old 12-07-2009, 12:55 AM   #8
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That's the place, ask for Sam or Chris, tell them I sent you.
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