Flat spot in mid range.

[agressive1]

Hey Guys

I had installed a K&N Air Filter to my MSO Pro 140cc and have noticed that changing gears from 2nd to 3rd and to 4th that each change you do there is a dead spot its as if the bike is turning of and then all of a sudden regains its power. The air filter is for off road use, motorbikes in general and also marine use.

I have tried both thrashing it through the gears and just riding it normally and still no difference.

Tomorrow i will try the genuine air filter as i cant remember having the same problem.

Do you think it could be to much air and that the mixture (Carb settings) needs to be leaned out or richened?

Thanks
Dean

 

[Sidney]

what filter was on it before that?

 

[agressive1]

The stock original MSO one like a foam one.

 

[CertifiedRiders]

Too much filter oil?

May have to adjust your air/fuel to compensate for the more free flowing filter, not a biggie either way.

 

[agressive1]

Thats what i was thinking but do i go rich or lean plus im still running the engine in i have only done just over half a tank.

 

[Worm]

Run it in with the original foam air filter? then put the K&N back on....

 

[Mack]

Shes getting better air flow and leaning out when you open off idle. Things to look at are air/fuel screw, larger idle jet, faster needle taper, different slide cutaway and sometimes just cleaning up the intake system will eliminate problem.