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Hiccup

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Beltrack

Member
Joined
Dec 20, 2019
Messages
10
Location
Maine
Cadet 109. When advancing from idle to high speed, there is a serious hiccup and stall unless you advance the throttle very, very gently.

Thoughts?

Thanks

John
 

mgonitzke

Well-known member
Joined
Aug 4, 2006
Messages
3,560
Location
Wichita, KS
displayname
Matt Gonitzke
Timing is off, carb is set too lean, bad condenser, probably several other possibilities. I'd start by checking those things in that order.
 

kashaver

Active member
Joined
Nov 30, 2014
Messages
37
displayname
Kelvin Shaver
If its not surging, I'm leaning toward weak ignition as well. You can try filing the points (I know you are supposed to 'replace' them, but I'm old school.) Try a 'known-good condenser and make sure its body has a good ground.

Another think I am seeing occasionally on these engines- The 40+ year old insulation on the wire from the coil to the points deteriorates and actually arcs to the clips it runs through at certain times, especially when the ignition load is anything more than minimal.
 

slufkin

Member
Joined
Dec 8, 2008
Messages
8
displayname
Scott Lufkin
Its always the condenser.
Ok, OK, its not always, but its quite often the remedy and its cheapo and easy to change so it has become my go-to whenever I have one that seems mechanically sound but does not start or run quite right.
 

Beltrack

Member
Joined
Dec 20, 2019
Messages
10
Location
Maine
Perhaps the coil is getting weak?

Good suggestions all. I’ll start with points, condenser, timing and obvious wiring faults.
 

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