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Old 12-27-2009, 05:56 PM   #1
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Sled: 99' ZR 700 & 06' Z 570 LX
10-11 Mileage:
09-10 Mileage: 500
08-09 Mileage: 500
07-08 Mileage: 300
06-07 Mileage: 150
ATV: 08' 650 H1 and 03' 400
2010 Mileage: 175
2009 Mileage: 230 so far
2008 Mileage: 250
Took the sleds out today, and my wife's sled is not running right at all. It won't idle without feathering the throttle, and backfires during deceleration. It has fresh gas and about 3/4's of a can of seafoam in the tank,new spark plugs, and even put on a new belt. The secondary is engaging almost instantly when you get on the throttle, and I can feel excessive heat coming from the clutch side of the machine while riding, it has never done that before, and the carbs seem to be "loose" on the carb boots. I tried to tighten them but there is a spacer on the clamp and it will only go so tight. Now onto the really wierd part, a friend I was riding with suggested tapping on the bottom of the carbs, so I gave that a try and it ran perfect for about 20 - 25 miles and then it started acting up again. It runs good from down low all the way to the top except for the backfiring and no idle. Here is another piece to the puzzle, I installed a heated shield plug in and this issue came about after putting that on. I have since removed it. Could something have shorted out or do the carbs need a good cleaning and possibly a clutch rebuild. After today the sled has 1585 miles. I honestly have not had to do anything to it besides put gas and oil in it and replace some oil lines last year, other than that it has been a very dependable machine. Any info would be very helpful.
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Old 12-27-2009, 06:01 PM   #2
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Time to clean the carbs.
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Old 12-27-2009, 06:05 PM   #3
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Sled: 95 ZRT 800 AGLT, 92 Jag 440
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08-09 Mileage: 1000
07-08 Mileage: 1600
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Have you looked into the throttle safety switch yet?
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Old 12-27-2009, 06:14 PM   #4
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Sled: 99' ZR 700 & 06' Z 570 LX
10-11 Mileage:
09-10 Mileage: 500
08-09 Mileage: 500
07-08 Mileage: 300
06-07 Mileage: 150
ATV: 08' 650 H1 and 03' 400
2010 Mileage: 175
2009 Mileage: 230 so far
2008 Mileage: 250
as far as the tss goes, I don't think that is it, being it is only 4 years old, but I could give it a shot. My 99 zr started bogging on me yesterday and I had to disconnect the tss, and that cured the problem. But the symtoms between the 2 sleds is different. And thanks for the quick replies. I was thinking it's the carbs or the clutches. I sure hope it is one or the other.
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Old 12-27-2009, 08:24 PM   #5
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<div class='quotetop'>QUOTE </div>
 Quote:
Now onto the really wierd part, a friend I was riding with suggested tapping on the bottom of the carbs, so I gave that a try and it ran perfect for about 20 - 25 miles and then it started acting up again.[/b]
Floats sticking, water in fuel, debris in float bowl?

I agree that you may need to pull the carbs for a good cleaning. Did you store with fuel stabilizer? Was it running like this right out of storage? You may have some green fuzz growing in the float bowls, or some debris got pulled into your carb pathways.
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