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View Full Version : MXZ 800 no power problem HELP


sleded700
12-12-2007, 11:29 PM
HELP , I just bought an 2003 800 MXZ rev, I gutted the airbox, put a thing can on it and had to change the reeds, It starts excellent, but as soon as I put it under load it just bogs down and wont go anywhere?? Any suggestions??

G-Force
12-13-2007, 12:19 AM
Too lean with a gutted airbox? Stator problem? It ran great before you did all the work??

sleded700
12-14-2007, 07:34 AM
yeah it ran good, as for the air box, I didnt "gut it" I removed the one that hangs off the side panel,

Lt Rascal
12-14-2007, 08:03 AM
Double check every thing you just done. Try putting the air box back on then the can. Make sure the reeds are the right ones for your sled. I have found it is better to do one mod at a time. To many changes makes it harder to tune in.

Why did you change reeds if it ran fine before?

hymark860
12-14-2007, 11:50 AM
Sounds like the DESS key isn't getting a good connection. Common sympton is it will idle fine but when you try to go over 3k rpm is putts out. Double check that.

sleded700
12-14-2007, 08:07 PM
I had to change the reeds because the boot from the carb to the reeds was delaminating from the reed plate that bolts on to the block, I tried messing with the DESS key but that didnt help, the symptoms are like the engine is loading up and just wont get any RPMs. I am thinking it might be the reeds as i bought them on EBAY to try and save some $$$$, the local ski doo shop wants $550.00 for a apir, seems like hiway robbery to me.