G oog le Buell 1125R Forum | Login/out | Topics | Search | Custodians | Register | Edit Profile


Buell Forum » 1125R Superbike Board » Archive through July 29, 2012 » Help! 1125R « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

Clarkjw
Posted on Tuesday, July 10, 2012 - 09:07 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks for opening...

My 2008 1125R wont start. Keeps blowing the fuel pump fuse and giving a Fuel PR error.

Power is on
Tries to crank
Fuel is spraying into the throttle bodies
But error shows and fuse blows

Fuel pump is good (just swapped into a known good Buell and it rides fine)

I think I'm missing a connection or ground but cant see where. Yes, I have the electrical manual, but I'm not that advanced....

tytytyty
Top of pagePrevious messageNext messageBottom of page Link to this message

Smoke4ndmears
Posted on Tuesday, July 10, 2012 - 09:18 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Bummer. Might be a tough one. After thoroughly inspecting all of the connections around the fuel pump visually I would simply take a multi-meter and check all of your positive connections to ground, starting with the fuel pump. Isolate which specific part of the circuit it is. Does the fuel pump fuse supply only just the fuel pump?
Top of pagePrevious messageNext messageBottom of page Link to this message

1125rcya
Posted on Tuesday, July 10, 2012 - 09:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I can offer you some bad advice..get a bigger fuse.
Top of pagePrevious messageNext messageBottom of page Link to this message

Two_seasons
Posted on Tuesday, July 10, 2012 - 10:17 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

You have a short somewhere.

Hope you have the Electrical Diagnostics manual.

Here is what I would do...
1.) Pull all the fuses out (take some pictures or draw it out) of the box EXCEPT the fuel pump fuse.
2.) start adding them in one by one until the fuel pump circuit fuse blows. That will isolate it down to that circuit that is making the fuel pump fuse blow.

You'll find it...patience is your best friend
Top of pagePrevious messageNext messageBottom of page Link to this message

Ohsoslow
Posted on Tuesday, July 10, 2012 - 11:12 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

sounds like a short to ground

check continuity from the fuel pump fuse to ground, if you have continuity then there is a short somewhere in the harness from the fuse box to the pump.

was this something that started after another repair?
Top of pagePrevious messageNext messageBottom of page Link to this message

Clarkjw
Posted on Tuesday, July 10, 2012 - 01:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks guys...

I'll do some continuity checks...

The bike started in october when I took it to Liberty Harley Davidson in Rahway NJ for a clutch issue. They charged me $200 to add some clutch fluid and advise me to swap the clutch...

They said problem was fixed and bike started. But my didn't check them...

After a forum search, I decided to remove the chassis and check the fuel pump wiring...

Will report back
Top of pagePrevious messageNext messageBottom of page Link to this message

Brumbear
Posted on Tuesday, July 10, 2012 - 05:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Post over on http://www.njbuellowners.com/forum/index.php perhaps someone can help ya there I will be in Verona and Jersey City tomorrow on the way home I can stop by if you aint to far off the beaten path.
Dave
Top of pagePrevious messageNext messageBottom of page Link to this message

Clarkjw
Posted on Saturday, July 14, 2012 - 06:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

So here is what i ended up doing...

Pulled the chassis from the broken bike

Replaced the fuel pump with another from a salvage bike, breaking 2 snap on tools!

Nearly flipped out when the throttle side bolt hole wouldn't align within within .6 inches. After wiggling and lifting, resorted to cargo straps and leverage. it moved 2mm and I said "maybe i can force it"
lol.

Well the spacing tolerance for that bolt are wider than they seem. That long bolt slid right in : )

There were no obvious shorts in the failed fuel pump. They must be internal, that is the only thing I changed and the bike starts up just fine.

2008 fuel pumps are shite

12 hours of work!
Top of pagePrevious messageNext messageBottom of page Link to this message

Boogiman1981
Posted on Saturday, July 14, 2012 - 08:34 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Apparently I have one of the best made 08's out there. Not to say mines been trouble free. But generally when somethings gone out once fixed it stays fixed. Worst thing I had was a bum front exhaust cam. Was down for months because of that but that's because I was/am broke not because of harley.
Top of pagePrevious messageNext messageBottom of page Link to this message

Brumbear
Posted on Saturday, July 14, 2012 - 09:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Glad you got it sorted sorry I couldn't get by to help out. We are riding tomorrow meeting in Washington (warren County) @ dunkin dounuts jnct of 31 and 57 if your up for a scramble 9 am.
« Previous Next »

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a public posting area. Enter your username and password if you have an account. Otherwise, enter your full name as your username and leave the password blank. Your e-mail address is optional.
Password:
E-mail:
Options: Post as "Anonymous" (Valid reason required. Abusers will be exposed. If unsure, ask.)
Enable HTML code in message
Automatically activate URLs in message
Action:

Topics | Last Day | Tree View | Search | User List | Help/Instructions | Rules | Program Credits Administration