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buell '01 x1 fuel pump won't prime
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rdg
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buell '01 x1 fuel pump won't prime - August 31, 2010, 02:44 PM

Problem - I own an American sport bike.

Related issue - fuel pump won't prime.

It will turn over when I push the start button, but when I turn the ignition on you just never hear the initial priming.

Checks so far -
1 - replaced all of the fuses on the bike (new relays are on the way)
2 - tested the plug from the ECM to the fuel pump, it's at least sending some level of current. Haven't hooked up a voltimeter to it. (I can identify 2 positive power sources of the 4 pins, which lets me deduce which is the ground)
3 - pulled the bank sensor to make sure it wasn't stuck to one side (this was a bitch and a half, btw, and I wanted to mention it for that sole reason)

Things I haven't done -
1 - sold the bike and bought a new one
2 - fed electricity straight to the pump (4 pins on the plug, I do not have a diagram of the pinout though and don't want to just randomly start supplying electricity. I believe the two posi's are supposed to be diff voltages but.. well let's be honest I don't know what the hell I'm talking about)
3 - gotten any diagnostic codes. check engine light isn't flashing but I ordered a Buell code reader anyway just incase.
4 - pulled spark plugs to make sure they're sparking (I have two new ones on the way, though, so I'll be testing that when they arrive).. I mean, I'm pretty sure my problem is the pump isn't priming but I'm not a mechanic.
5 - Taken it to a mechanic like I should have done a year ago.
6 - replaced fuel filter (not that I believe it changes the issue, but I have one on the way)

This is actually fuel pump #2. I first realized this issue about a year ago. Figured the pump was dead so I bought a replacement. Had the same issue. Turns out it may not be the pump.

(I've also been seeking help over at badweatherbikers but so far no success)

Last edited by rdg; August 31, 2010 at 02:54 PM..
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September 9, 2010, 12:04 PM

Steve, did you ever figure out what was wrong? If not, I'll do my best to find out. Don't sell your Buell. The commies win if you do.
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September 9, 2010, 12:08 PM

Could be the fuel pump again. Buells are like that.


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September 9, 2010, 12:50 PM

So I am throwing the following error codes -

Throttle Position Sensor
Low Battery Voltage
Fuel Pump
Bank Angle Sensor

A guy at BWB thinks it's possible there is an open circuit somewhere that is causing all of these to trigger. I have no idea how to track that down.
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September 9, 2010, 02:11 PM

Quote:
Originally Posted by rdg View Post
Problem - I own an American sport bike.
I feel ya, XB here

Quote:
The commies win if you do.
+1 on not letting the commies win


I really like the tube frame buells, let me know if you would like me to lend any of my multimeter skills
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September 9, 2010, 02:58 PM

Quote:
Originally Posted by Desmo View Post
I really like the tube frame buells, let me know if you would like me to lend any of my multimeter skills
I would very much like this. Just be warned you have to deal with total incompetence when it comes to anything mechanical or electrical.
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September 9, 2010, 03:33 PM

Quote:
Originally Posted by rdg View Post
I would very much like this. Just be warned you have to deal with total incompetence when it comes to anything mechanical or electrical.
I'm with you on both counts. Where is the bike located? I will see if I can locate some wiring diagrams on the interwebs

EDIT: Repair Manual can be found here, with 114 pages on the fuel system alone

http://www.steveturnbull.co.uk/buell.../x1_manual.zip

Last edited by Desmo; September 9, 2010 at 03:57 PM..
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September 30, 2010, 10:15 AM

Somehow water got into my gas tank and it was shorting out the pump. I realized this when I pulled the pump and it was covered in rust. I mean it looked like it had been pulled from a car sitting in seawater for 70 years kind of rust.

I've got it idling again. Found a Walbro pump new, disassembled the the original pump assembly and subbed in the new pump. New fuel filter had a bad O-ring and it was spewing fuel everywhere. I got a new one from Advance Auto that is just close enough to the right size to hold me over until the right one shows up in the mail. Love that I got in touch with K&N and they said "Oh yea, we didn't manufacture that oil filter, Golan did, you'll have to get in touch with them."

Next on list in no particular order:
oil change (need to find an oil filter)
replace the plugs
replace the front wheel bearing I damaged during installation
figure out if clutch cable is bad or just poorly adjusted
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September 30, 2010, 10:17 AM

Noice. Get er done mang. Then save your $$$ for 1190RS coming out next year.

Diluted simple green and microfiber mitt or brush if you don't mind scratches will get the oil off, dish soap should do but not as good as SG. But dilute it, straight up concentrate will eat clear and paint if left on there, dilute it and its fine.

Last edited by b00st; September 30, 2010 at 10:28 AM..
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