2000 xcr

[polaris754]

hi all lookin for clues.. sleds been running great last 6 years,, was out yesterday appears center and mag cyl have cold pipes , got comp and spark new plugs look dry only running on pto cyl, ever seen anything before like this hard to think both carbs messed up when i choke it rpms go up mean it throttles up but its not right and its lean uncontrolled idol

 

[MrSled]

hi all lookin for clues.. sleds been running great last 6 years,, was out yesterday appears center and mag cyl have cold pipes , got comp and spark new plugs look dry only running on pto cyl, ever seen anything before like this hard to think both carbs messed up when i choke it rpms go up mean it throttles up but its not right and its lean uncontrolled idol

Make sure the clean those carbs good, you could have a stuck floats. Also check to see if you have clear pipes, I had a mouse build a nest in the silencer and had a similar affect.

 

[polaris754]

i have seen one stuck never 2 whats the odds

 

[MrSled]

i have seen one stuck never 2 whats the odds

Depends how long it was sitting with crappy fuel in the bowls. I have had it happen.

 

[polaris754]

sled is used every year , i use fitch fuel catalysts, this happened on 3 rd trip this year

 

[MrSled]

sled is used every year , i use fitch fuel catalysts, this happened on 3 rd trip this year

Try putting some gas in the cyinders that are not firing and see if they fire, then you know they are not getting fuel.

 

[polaris754]

yep my thoughts as well gotta wait a few days just had a heart cath done gotta throw the pipes back on and ill get the wife to spray the fuel

 

[850Switchback]

The Fitch catalysts only kill off any bacteria present to slow the fuel degredation, nothing more, despite their claims. You could still be building deposits on the jets, especially with crap ethanol that hates brass.
Where are you primarily buying gas? Something with good detergent, or mostly at trailside pitstops with nothing in it?

 

[polaris754]

shell 93

 

[850Switchback]

Well that kind of rules that out, thats what I primarily run too, but still worth checking the bowls just in case.