Anyone have any hot leads on this kind of a problem?
I just bought a QT 50 from a kid ouside of town... the damn thing hasn't been register in 15 years... but runs great... err used to run great.
As of about a week ago, it started acting weird at full throttle. Though its kind of internittant, it always happens on level ground, or going down hill... I suspect its RPM related, as it never gets above 20 MPH going uphill... at about 24 MPH the engine changes note, to a quieter one, a lower pitched one, and ther eis a sudden drop in speed. This lasts from 2 -10 seconds... then picks up again, and sometimes will be fine for a few blocks, sometimes not, and start over again...
any ideas? or other information I could provide?
Ive checked the spark plug wire... it seemed loose on day... the air filter is clean... and its full of gas... I did notice that it seemed to run slightly rich today, when I came toa stop sign right after on of these incidents, and the exhaust caught up to me, and it smelled rich. It never did before... not even when choked.