Puch Maxi: engine cuts out at mid RPMs

Tone It Down /
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Basically, all the symptoms of a bad pickup or ignition coil. Bike revs fine up to nearly 1/2 throttle. Then it hits a notable level and cuts out and sputters pretty hard. This happens either on the stand or while riding. When riding, I can feather it to about 30mph on a thinline before cutting out and hard sputtering if I go over the line. The cutting is hard, which makes me think electrical. However, the lights do not flicker when it’s cutting out.

I’ve seen this before: changed ignition coil and back to rippage. Not so this time. What I’ve done (essentially replaced every electrical part on the bike):

~~ NOTE: stator is Treats CDI~~

- upgraded pickup coil to motobecane version

- upgraded ignition coil to motobecane version

- Replaced the 2041 Pietcard Box with new

- Replaced external coil with pietcard version

- Replaced plug wire and boot on ext coil

- Varied spark plug gaps

- Checked and quick cleaned carb

After replacing all these parts, I still get the issue so I hooked up to a timing light. Everything starts out normal. I see my line auto advancing, as it is supposed to do initially, then when I reach a certain RPMs (about half 1/2 throttle), the line just completely vanishes and the cutting out begins! I’ve read some people talk about their fire mark jumping a complete 180 degrees but I haven’t confirmed that in my case since that would put the fire mark underneath the flywheel and I’m all solo with no help.

I have not tried adjusting the timing yet as I see no real reason it could have gone from just fine to all fucked up in a moment. Any ideas, insight, personal experience would be greatly appreciated. I just can’t fathom wtf could be the problem here. I’m convinced it’s electrical; but I’m open to your thoughts.

Thanks guise! (If I haven’t already, I’ll try to come back and add a YouTube link)

This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
  Puch Maxi: engine cuts out at mid RPMsTopic by: Tone It Down Tone It Down 08/21/19 10:29AM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: live ɘvil live ɘvil 08/21/19 10:41AM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 08/21/19 10:53AM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: live ɘvil live ɘvil 08/21/19 01:05PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 08/21/19 01:16PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: live ɘvil live ɘvil 08/21/19 01:22PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 08/21/19 01:33PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: P D P D 08/21/19 03:05PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 08/21/19 06:27PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 08/21/19 12:50PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Jimmy Crank Jimmy Crank 08/26/19 09:59AM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Lee Snover Lee Snover 08/26/19 09:20PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 08/26/19 10:31PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: K Olena K Olena 08/28/19 03:56PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 08/28/19 04:40PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Lee Snover Lee Snover 08/28/19 05:20PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 08/28/19 05:22PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 09/23/19 05:29PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Mike Boyd Mike Boyd 09/23/19 06:04PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Potr zebie Potr zebie 09/23/19 08:51PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 09/23/19 09:19PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: todd amundson todd amundson 09/24/19 11:20AM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 09/24/19 11:50AM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: DrGeorgeTompson (Alan) DrGeorgeTompson (Alan) 09/24/19 05:26PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: DrGeorgeTompson (Alan) DrGeorgeTompson (Alan) 09/24/19 05:32PM
  Re: Puch Maxi: engine cuts out at mid RPMsRe: Tone It Down Tone It Down 09/24/19 06:20PM

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