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Old 08-29-2014, 04:21 PM   #1
Rev OP
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Gen 2 KLR Carb issue help!!!!

2008 KLR!!!

So, the other day I replaced my gas tank with an IMS 10 gallon tank and all was well, outside of the fuel inlet on the carb pouring gas out of a break in the plastic. I replaced it (pulled the bracket off that held the cap over a spring), and now the bike is running odd.


Symptoms:

1: on start up, the bike idles lower than it did before the work.

2: once ridden some, the throttle doesnt want to go back to idle speed (it will, but very slowly)

3: previous decel pop is lessened, bike *seems* to run smoother altho there are times it feels fuel starved. That last bit could be because of 10 gallons of fuel...


I need ideas before I go to pull everything apart. Id rather have parts on hand since this bike is my only vehicle.

THANK YOU

Also, I HAVE ridden with the gas cap up, no change, and the IMS vacuum system was fine before all this. Its possibly when I pulled the electronics off to change the inlet piece I dislodged some portion of the vacuum deal since it is so many wires. AIS system is intact (for now)
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Rev screwed with this post 08-29-2014 at 06:17 PM
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Old 08-29-2014, 04:46 PM   #2
jon_l
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You might want to provide more details about the machine you have.
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Old 08-29-2014, 05:57 PM   #3
Rev OP
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Quote:
Originally Posted by jon_l View Post
You might want to provide more details about the machine you have.
Oh yeah...

2008 KLR,
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Old 08-29-2014, 07:03 PM   #4
RideFreak
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return to idle is probably the cable interfering with the tank somewhere.
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Old 08-29-2014, 07:09 PM   #5
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Originally Posted by RideFreak View Post
return to idle is probably the cable interfering with the tank somewhere.
the main reason i DONT think its that is that the cables werent fudged with this go round. When I got the tank on, i rode it no issues for about a week with the bike puking gas from the fuel elbow. I replaced it, and now its doing this.
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Old 08-29-2014, 10:00 PM   #6
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Is it possible the carb was tuned with an airleak and when I fixed the elbow, its now out of whack?
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Old 08-30-2014, 02:48 AM   #7
GAS GUY
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Are you sure your vent and vacuum lines are not reversed on your IMS tank ? Or maybe you have a vacuum leak ?
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Old 08-30-2014, 11:09 AM   #8
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From what I can see, i lost the tiny O ring on the cover. itty bitty, never knew it was there. so ive got one on order to in hopes of a cure.
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Old 08-30-2014, 01:13 PM   #9
GAS GUY
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Quote:
Originally Posted by Rev View Post
From what I can see, i lost the tiny O ring on the cover. itty bitty, never knew it was there. so ive got one on order to in hopes of a cure.
If you are talking about the little o ring on the fuel filler opening, that is just for the vent system and should not effect you at all.

You have 2 rubber lines coming out of your tank under the front of the seat.
If your seat is off, but you are straddling the bike and facing forward and looking down at the 2 lines the one on the right should go to engine vacuum.
The one on the left just vents.
Other than that it is just the fuel inlet line.

As far as the throttle cables go.
With the engine off, just simply look at the right side of your carb as you reach up and work the throttle.
Look at the end of the big shiny idle speed adjustment screw and make sure the throttle linkage snaps closed against it and make sure your complete range of motion is there.Do it with the handlebars turned in various positions also, both ways.

If you still have vacuum petcock, make sure it is hooked up properly.
Mine is eliminated, but I believe the vacuum line for the tank is intended to T into the petcock vacuum supply.

If all that checks out, you probably have other issues.
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