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Old 03-07-2012, 12:12 PM   #27361
Crawdaddy
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Location: Ramona, CA.
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Went for a ride near my place in AZ. this past weekend. Ride Report/Photos: http://www.dualsportmoto.com/boards/viewtopic.php?p=3186


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Old 03-07-2012, 05:21 PM   #27362
Daamud
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[QUOTE=wtiger;18155751 i have been checking my chain tension by compressing the rear shock and tying it off with a ratchet strap, and making sure that the chain does not become taught. i don't want a busted chain or worse out in the middle of nowhere.
.[/QUOTE]

^ This.

All the talk of how far and where, this is what needs to be done. More so, disconnect the shock and cycle the suspension, find the point where the chain gets tightest, it may be at 3/4 stroke ....All depends on where the output shaft is compared the swingarm pivot..... Then take note where it's at when back together....Sprocket size would probly change the spec also.



Think I know what I'm doing this weekend.
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Old 03-07-2012, 07:25 PM   #27363
scottmac
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Machtig's WRR ate up a couple of swingarm guards in short order on his western TAT ride
last summer. He thought the culprit was a tight link and cured it by replacing his chain if I
remember right.
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Old 03-08-2012, 12:17 PM   #27364
Hayduke
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WR Rider needs help in YUMA, AZ!~

Fellow inmate Dysco is in Yuma; was headed into Baja, and his WR250r just quit. He's with Codys and they got the bike to a Yamaha dealer in Yuma, but the dealer is basically not giving them the time of day; they are in the parking lot trying to trouble shoot, but not having much luck.

Do any locals know of an independent shop/mechanic that could help them out?

His symptoms as I understand it:

Riding down the highway to the border; bike started losing power, and the engine light came on. (I think).

Pulled to the side and let it sit for a few minute. It would then start and run, but not idle. then it wouldn't start at all.

He pulled the airbox cover; there's oil in the airbox. He says he "may" have overfilled it. He wrung out the air filter, but still no go.

I suggested pulling the plug, that it might be fouled; in the parking lot of the shop, he did so, and replaced the plug. He said it runs but won't idle still.

Any ideas? Any locals there?
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Old 03-08-2012, 12:24 PM   #27365
DougZ73
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Quote:
Originally Posted by Hayduke View Post
Fellow inmate Dysco is in Yuma; was headed into Baja, and his WR250r just quit. He's with Codys and they got the bike to a Yamaha dealer in Yuma, but the dealer is basically not giving them the time of day; they are in the parking lot trying to trouble shoot, but not having much luck.

Do any locals know of an independent shop/mechanic that could help them out?

His symptoms as I understand it:

Riding down the highway to the border; bike started losing power, and the engine light came on. (I think).

Pulled to the side and let it sit for a few minute. It would then start and run, but not idle. then it wouldn't start at all.

He pulled the airbox cover; there's oil in the airbox. He says he "may" have overfilled it. He wrung out the air filter, but still no go.

I suggested pulling the plug, that it might be fouled; in the parking lot of the shop, he did so, and replaced the plug. He said it runs but won't idle still.

Any ideas? Any locals there?
Over filled/lubricated air filter will not stop bike..been there, done that.

Is his bike an 08?

Does he hear the fuel pump buzzing when he turns the key on??

Sounds fuel pump related to me.
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Old 03-08-2012, 12:33 PM   #27366
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Quote:
Originally Posted by DougZ73 View Post
Over filled/lubricated air filter will not stop bike..been there, done that.

Is his bike an 08?

Does he hear the fuel pump buzzing when he turns the key on??

Sounds fuel pump related to me.
He said he was able to bump start it after changing the plug, but it won't idle. Do you think the fuel pump would present that way?
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Old 03-08-2012, 12:49 PM   #27367
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Quote:
Originally Posted by Hayduke View Post
He said he was able to bump start it after changing the plug, but it won't idle. Do you think the fuel pump would present that way?
Correct...the first thing is to see if with key on you hear the fuel pump come on for about 1 sec then shut off. The sound is obvious.

BUT....if that Yamaha is like most cars, if the throttle potentiometer goes bad, they won't idle at all, or idle poorly. BUT BUT...I'm guessing the ECU should give you a fault code for a bad throttle pot

Finally, if you look at the '08 serial numbers for USWR250R & X, ALL of them can experience the fuel pump failure!
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Old 03-08-2012, 01:00 PM   #27368
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My ride into work this morning.

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Old 03-08-2012, 01:02 PM   #27369
DougZ73
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Quote:
Originally Posted by Hayduke View Post
He said he was able to bump start it after changing the plug, but it won't idle. Do you think the fuel pump would present that way?
If the fuel pump can't maintain pressure to the injector, it would present exactly like that.
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Old 03-08-2012, 01:04 PM   #27370
Dysco
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The fuel pump is charging on startup, but it won't idle at all. My WRr is one of the sketchy numbers from '08. (<2,000)

Sorta bumming a Comfort Inn computer right now...

Anyone had this problem (fuel pump) and heard it charging when turning the ignition on? May order the pump from Ron Ayers or, alternately, take the pickup down to Baja while my buddy rides.
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Old 03-08-2012, 01:05 PM   #27371
Dysco
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Quote:
Originally Posted by DougZ73 View Post
If the fuel pump can't maintain pressure to the injector, it would present exactly like that.
That's kinda where I arrived. Yammie shop said 1 week on pump.
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Old 03-08-2012, 01:06 PM   #27372
Dahveed
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Quote:
Originally Posted by Dysco View Post
The fuel pump is charging on startup, but it won't idle at all. My WRr is one of the sketchy numbers from '08. (<2,000)

Sorta bumming a Comfort Inn computer right now...

Anyone had this problem (fuel pump) and heard it charging when turning the ignition on? May order the pump from Ron Ayers or, alternately, take the pickup down to Baja while my buddy rides.
I have an 08, how can I tell if I have one of the problem fuel pumps or if it had been replaced by the PO?
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Old 03-08-2012, 01:06 PM   #27373
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One other thing...water in gas from a cheapo station presents the same way too.

key diagnosis, as I mentioned, is to listen for the fuel pump whine.

The initial whine we hear is the fuel pump running to build pressure. Once pressure is met, pressure regulator turns pump off. Once it gets below point x, it kicks on again, etc.

The heat issue also comes into play and is also a sign of the fuel pump issue.
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Old 03-08-2012, 01:07 PM   #27374
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Quote:
Originally Posted by Dysco View Post
That's kinda where I arrived. Yammie shop said 1 week on pump.
Did ya get potentially bad gas recently at all, that you know of?? A sketchy station?
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Old 03-08-2012, 01:10 PM   #27375
Dysco
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Quote:
Originally Posted by DougZ73 View Post
Did ya get potentially bad gas recently at all, that you know of?? A sketchy station?
Nope- local gas from Salida- best they make.

Ran like a top last night, actually. Did some freeway and some in town putting- maybe 25 miles and ran dreamy. Got 10 miles today before the drama... 9 miles before the border.
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