New variator aaaannddd issues arise....

[Kenho21]

So I installed my Multivar today along with a 1500 contra as well as a new main jet.

The issue: When I ride now at more than 3/4 throttle or so it starts popping, it started doing this with a 112 main jet, so I up jetted to the largest jet I have a 120 and it's still doing it but a little less.

Also it feels like the engine is working really hard, almost feels like theres some kind of resistance.

Please help!!!!!!!

I'm going 

[wordslinger]

..i cant keep up...

..tell again, what is your setup??

..from air intake, to driven pulley.....

[Kenho21]

Free flow air filter modified so that it protrudes out the side (so plenty of air)
120 Main jet
Stock pilot jet
Stock Belt
Malossi Multivar
6g Rollers
1500 Contra

Am I missing anything?

[Kenho21]

And 72cc kit

[wordslinger]

...you might go ahead and try a 125 jet...dunno your altitude, and humidity and stuff, but it sounds like your upjetting is in the right direction...

..also, with a 72cc, you will probably want a longer belt...

..try a 732-18.5-28 gates premium.....

..sounds to me like you're lean and running available horsepower over your cvt setup, the belt being the weak link...


..then again, i could be waay off base.......

[wordslinger]

..ultimately, you gotta chop some plugs to get a good idea what your WOT mix is...

[Kenho21]

You don't think running too rich is a possibility?

[wordslinger]

it started doing this with a 112 main jet, so I up jetted to the largest jet I have a 120 and it's still doing it but a little less


..you said so,....

but it ...absolutely is a possibility!!!


..havent chopped any plugs, so i really cant say for sure, however...

..it's ever better to err on the rich side, then work back to best...

[Kenho21]

True, I have a couple extra plugs. I'm gonna start choppin tomorrow...

I'll let ya know what I find out.

Muchas Gracias

[Kenho21]

Oh, and why the new belt? So I get the full potential of the new variator?

[wordslinger]

..yes, the 72cc will put waay more torque on your belt...

..the bando works WELL for the oem cc....

...but with a kit, you will need a bit longe, maybe widerr belt to better transfer the added horsepwer and torque increase...


..in my opinion..


 

 

[Kenho21]

Ahhh, well I'm gonna trust the Kymcoforum process here and order that belt tomorrow then...

[Kenho21]

Have you run this belt with the Multivar before?

[zombie]

Popping in the pipe is lean. Popping in the carb is rich.

[REDKYMCO]

Are you sure the popping is not just because the engine is now reving to hard and the valves are not closing in time.....