2002 R6 one carb issue, sometimes.... - Yamaha R6 Forum: YZF-R6 Forums
 
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post #1 of 6 (permalink) Old 04-14-2010, 12:59 PM Thread Starter
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2002 R6 one carb issue, sometimes....

I looked through search but all the topics turned up with stuff way worse than mine. Anyway, since I got my 02 in May, it has had a slight carb issue. The third cylinder from the left (dont know how they are technically numbered) doesn't always fire, but only at low rpm's.

I think its the carb because once its warm and above like 5000 rpm, there is no lack of power and its firing on all 4. If you heat gun the header after a normal ride, the thrid pipe is around 20 degrees lower than the rest.

If I pour a bunch of Gumout in the tank and let it sit overnight, it clears up for the rest of the tank, after that its back. Any thoughts?

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post #2 of 6 (permalink) Old 04-14-2010, 01:05 PM
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Re: 2002 R6 one carb issue, sometimes....

Might be the float setting on that one...or possible need of sync... Could be a lot of things.

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post #3 of 6 (permalink) Old 04-14-2010, 01:17 PM Thread Starter
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Re: 2002 R6 one carb issue, sometimes....

Yeah I am very familiar with carbs, on cars that is. I could go through a holley and rebuild it, jet it, adjust it, and put it back on my car in like an hour. Bikes are still new to me. I want to bring it to a shop, but they will rape me on the price. Id rather get some kick ass suggestions then do it myself. I'm not worried about screwing them up, just wasting time and not solving the problem.

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post #4 of 6 (permalink) Old 04-14-2010, 01:18 PM
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Re: 2002 R6 one carb issue, sometimes....

I would start by making sure they are all properly synced and that the float level height is the same and in spec for all four carbs, assuming that they are all clean inside of course.

When you want to win, when there is no substitute for the best, when you don't want to feel the sting of second place, you really only have one place to turn.

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post #5 of 6 (permalink) Old 04-14-2010, 03:52 PM
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Re: 2002 R6 one carb issue, sometimes....

bikes are easier than cars to work on... go over to R6 messages.net they have a how to on sync carbs..


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post #6 of 6 (permalink) Old 04-14-2010, 04:44 PM Thread Starter
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Re: 2002 R6 one carb issue, sometimes....

Quote:
Originally Posted by JC_Soulja View Post
bikes are easier than cars to work on... go over to R6 messages.net they have a how to on sync carbs..
Hmm, interesting.... Ill check it out. I was on there earlier looking at 520 conversion "How to's" for more info.

The bike does have a Yoshi slip on, and I have no idea if the guy before me did a jet kit or not. Since its only the one carb i am sure thats not the issue, just a side note.

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