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My sled (2003 800 rev sport) is idling rough and around 3000 rpm, also when I shut it off it usually backfires. The needles were lowered when the carbs were cleaned - could this cause any problems? Also seems to be overheating a bit. Any suggestions? Thanks.
 

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Mine did the same thing this weekend. It was the carb boot. It only comes as an assembly with the reed cage, $143 each.

Mine is covered under my extended warranty, so I took into the dealer.

Take a look at the plug wires as well.
 

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Very important to fix that problem. Make sure you get it to idle down and not backfire. It will blow out the crank seal on the 03s thats a huge problem for that motor.
 

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Could have something to do with the excessive heat. More air = engine running lean = more heat. If you need to replace the boots get V-Force reeds from Sled-parts.com. They are $260 for the pair, instead of the $143 each for the POS BRP replacements. The boots come with the reeds and are much better quality then the stockers. If you do need one though, I have one that I took out of my sled. Only one boot on mine was gone so the other one is still good (no rips). PM If you want it.
 

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Yeah, get the Delta V-force 3's from www.sledparts.com I got mine on sale there for $245. Much better quality than the stock BRP's. Mine had the high 3500 rpm idle. Mine is a 600 and not an 800.
 

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I just replaced a set of reed cages on my 700 mxz for rough idle, it seemed to run fine at higher rpms, but it also started using more fuel. I pulled the cages and found the reed pedal seats were delaminated from the metal cage, totally coming apart on the PTO side. Put new reeds and cages in, runs smooooooth.
 

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Discussion Starter · #12 ·
Thanks for all the input guys. The problem was loose y pipe bolts - 3 OF THEM - weren't tightened when the new crank seals were out in. It now idles at 2500 when you first stop and then down to 1600 after about 20-30 seconds - and no more backfire. Thanks again.
 
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