Bike not consistent at full throttle

Y

YamahaMan09

Member

Apr 28, 2002

15

0

• Mar 26, 2003

• #1

Hey,
I've got a YZ 80, and recently when I rev the bike full out when not in gear the noise is intermissant...in other words, it goes very loud then stops for a sec and then goes up again...kinda like WING.....WING.....WING...... Does anyone know why this may be happening? thanks

 

G

Glitch

~SPONSOR~

Dec 3, 2001

630

0

• Mar 26, 2003

• #2

The reason is because there is no resistence on the engine. It's reaching maximum rpm and just kind of hanging around in that area. I dont think its very good for the bike to be held at max rpm without any resistence, atleast I don't think. Try riding it around then go full out while in gear and accelerating.

 

C

cweingartz

Member

Jun 6, 2000

241

0

• Mar 26, 2003

• #3

Rev limiter?

 

G

Glitch

~SPONSOR~

Dec 3, 2001

630

0

• Mar 26, 2003

• #4

Um, I dont think there is a rev limiter on 2 strokes, only 4 strokes. On a two stroke, I think that it revs as much as it can before it cant go any faster. Also, when the rpms are up at like 15,000, on an 85cc, there is a maximum amount of air/fuel that can be traveling through the crankcase and through ports into cylinder. Also, YamahaMan09, you might want to try a resistor plug, such as BR10ES, instead of B10ES, the R is for resistor. A resistor plug blocks out radiowaves or something so that there is not interference, I think.

 

F

FMFHonda161

Member

Jul 11, 2002

151

0

• Mar 27, 2003

• #5

There are rev limiters on a lot of bikes. My friend had a KX 60 that had a Rev limiter and a couple of other ones with them as well.

 

Vic

***** freak.

LIFETIME SPONSOR

May 5, 2000

4,008

0

• Mar 28, 2003

• #6

It may be crying for help. :flame: :silly:

 

Jasle

Sponsoring Member

Nov 27, 2001

1,358

0

• Mar 29, 2003

• #7

I have seen a bad stator cause this on a 2 stroke. Also an air leak causing an overlean condition. How does it run under load? what does the plug look like?