Bill,thanks thumb doc! ive read alot of your posts here, you have been a big help for ALOT of us folks.
i will run these tests you mentioned and get back to you.
a few things to remember:
in cold or warm weather the sled still act this way, BOGGS at higher rpm/speed.
once started the sled runs good for anywhere from 5 minutes to 1 hour then it starts to BOGG at high rpm.
the first thing we did was go thru the carbs, clean and even replace and adjust jets.
(after the carb work we did ,the sled still acted up the exact same way.)
the compression should be good, because the entire engine has now been totally rebuilt.
forgive me though if i sound like a rookie ( GUILTY )
my buddy works on sleds alot he's doing most of the work for me.
anyway i really appreciate your input cuz you obviously know a lot about sleds.
I'll run these tests and post the results soon.
Repalce your fuel filter and see what happens. You are probably not getting enough fuel due to restriction in the fuel filter.My first POST!
I've read so much here, ALOT of great info and peeps here seem very cool and willing to share info and ideas. Thank You for that!
anyway, i own a '98 MXZ 670 Rotax. (i love it!) but maybe not for long.
one day it started Bogging at higher speed (top end)
and seemed to do it more when the sled gets warmed up.
it wouldn't always bogg but most of the time it did, again only at higher speeds like 35 mph and up..
so first i had the carbs and clutch cleaned. NO GO.
then, top half engine rebuilt. NO GO.
then, crank seals replaced bearings all checked out good. NO GO.
then, spring in secondary clutch we looked at it (it didn't look bad or stretched or twisted?)
and now we are thinking about getting the STATOR rebuilt
next will be coil?
Its starting to cost a lot of money but i really like this sled, when its running good it has a lot of (BALLZ!).So im really hoping the STATOR will be the solution. i read a lot of good ideas from you all here in the forum. Would love to hear from you if you got any advice or suggestions or SUPPORT
:bash: :bash: :bash: :bash: :bash: :christmas: :christmas: :christmas:[/b]
His sled is a '98 which I think was the only year that 'doo used them. I pulled them out of my MXZ500. Bro didn't take them out of his wife's Formula 583DL & a few winters later they gummed up on their trip up north. Got to a dealer, left it w/ them & the mechs' there knew what the problem was & yanked them out. Sled never had a problem in all the years she had it other than that.how about your fuel lines? make sure that you dont have a kink in them, also there are on some skidoos there are small filters when you take the gas line off of the carb, there is a small sock filter small white one check that see if thats not gummed up?[/b]
Check your main jets. They should be 310 PTO and 290 MAG running at sea level and -20C operation. What is your altitude and temperatures you ride at? Make sure the carbs are cleaned in all the passages including the main and pilot jet circuits.The problem seems to be that the clutch side cylinder is not getting enough spark or getting too much gas at HIGH END / RPM ' s , because the clutch side plug is the side with the slightly wet plug and the side that is bogging i guess. Could a gummed filter cause this?
we havent changed the plug wires yet ,
and havent replaced the cdi box yet (but i heard when they go out they go out completely meaning like the sled would not even run or Die alot. mine doesnt do that.
next week im taking the sled into another shop to have a guy there check it over and look at the carbs.
The Coil didnt Work. Still boggs.