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Buell Forum » 1125R Superbike Board » Archive through November 09, 2015 » First time changing fuel pump « Previous Next »

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Panshovevo
Posted on Saturday, October 03, 2015 - 11:15 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

In the process of changing the fuel pump on the '09 CR.
Wishing like hell I had the bike on the lift table under the overhead hoist...that spot is currently occupied by another bike waiting for back ordered parts, so I'm working on the shop floor with the back of the bike lifted with an engine hoist.

Dang, I'm too old for this crap...and to top it all off, I just got a call that the back ordered parts came in yesterday...sure wish I had known this before tearing into this job on the floor!

Got two lift tables, but getting the engine hoist and the second lift in the same general vicinity was going to take major relocation efforts. It's a crowded shop...
At any rate, it looks like I could probably get the fuel pump changed without pulling the swing arm completely off, if I remove the Free Spirits exhaust mount, so the swingarm would pivot down a bit further.

Anyone done it that way?
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Nuts4mc
Posted on Saturday, October 03, 2015 - 11:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

maybe this will give you some ideas...
http://www.badweatherbikers.com/buell/messages/290 431/755725.html?1421634955

getting old sux
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Panshovevo
Posted on Saturday, October 03, 2015 - 12:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Thanks.
Much appreciated.
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Panshovevo
Posted on Saturday, October 03, 2015 - 07:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

New pump is in.

For future reference, remembering that with the old pump, the fuel pressure in Diagnostic Mode would drift down to 40 KPA with the engine off, the new one shot directly to 550 KPA and stayed there for the minute or so I watched it.

With the old pump, the pressure check with the engine running was in spec, but it kept throwing the low fuel pressure trouble code, and the pump got noisy the last time I rode it.

It's going to be interesting to ride it to see if anything changes. In spite of some improvement with various tweaks, it still had a little hesitation and surging at lower rpms and throttle settings.

Not going to be riding right away, as I went ahead and pulled the swing arm to check the bearings.
(Had the granddaughters here today too...)

Also found the exhaust mount isolator was coming apart, so I'm going to have to fabricate a substitute until I can find the right replacement.

I have some glass fiber reinforced rubber type material that I used to make control arm bushings for a Ford F-550 motor home chassis years ago, rather than pay a couple hundred bucks for new control arm mounts. Held up great, so it should work for this application as well.
IIRC, the material came with some mower parts a neighbor gave me. I think the pieces were intended to be stabilizing rollers for a finish mower he was building at one time.

(Message edited by Panshovevo on October 03, 2015)
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Panshovevo
Posted on Wednesday, October 07, 2015 - 08:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Got everything back together and rode the bike a little tonight.

I hadn't realized how much power I had lost...particularly at low rpm.

Once again, a slight twist of the wrist in first gear will lift the front end.
Not sure when it stopped doing that...I had thought I just got used to managing the power.

Slightly cooler temps are helping too.
I haven't ridden the bike much at all in the last couple of weeks, and the summer heat has finally broken.

Still setting a trouble code though. PO193, fuel pressure sensor circuit high.
I need to play with it, and figure out when it's setting the code, as I never noticed the CEL come on while riding it.

Might be a wiring issue, might be the pressure sensor, or not.


Tomorrow.



(Message edited by Panshovevo on October 08, 2015)
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Fresnobuell
Posted on Thursday, October 08, 2015 - 04:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)


quote:

Once again, a slight twist of the wrist in first gear will lift the front end.




Maybe I am doing something wrong...but I can't get the front end to lift unless I am wringing the hell out of the bike. I actually like having 2 wheels in contact with the pavement, so I am not really complaining, just always surprised others can lift the front wheel with such little throttle.

I do ride with alot of weight forward, and I am guessing this has much to do with my tendency not to wheelie...partly becuase I am short, but also I prefer the handling characteristics with as much weight forward as possible.
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Dennis_c
Posted on Thursday, October 08, 2015 - 05:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It should lift easy in first gear even sitting forward
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