Help Required Please Peugeot Speedfight

Okay before we start I have my Flame Extinguisher ready, it might not be
a Motorcycle but it does have 2 wheels.

The lad has bought 2x Peugeot Speedfights, 1 was supposed to have good
engine, chopped up electrics, the other knacked engine, good electrics.

When we got them back, from 2 places I might add he finds out 1 is
Liquid the other Air. But looking at the wiring harness they are the
same, except 1 has the immobiliser the other doesn't.

So we've taken the wiring off the AC immobilised ped & put it on the LC
non-immobilsed ped. Started it up & it is happy to run just will not
rev, soon as you try to open the throttle more than a little it dies,
taken the carb off, cleaned it up no better, so we've changed carb over
between bikes, exactly same result.

Does anybody have any clues, apart from a can & some matches, does
anybody know if the CDI/Immobiliser drops it into 'safe' mode to stop it
being nicked or if there is any timing that can be altered?

 

And both without a logbook, I bet.

 

Shame I'm not a betting man, but strangely enough maybe in this day &
age I am a honest one!!!!!

Both have V5C's registered at the address's they were collected from &
both engine numbers & frame numbers match those on said documents.

Judging other by your own standards is not always best.

 

Blew it totally with that one, old fruit.

 

Strewth.

And I wasn't aiming at you, anyway - you said your lad bought them. And
IMHO, when a "lad" buys two manky scooters, the odds on both of them
being kosher are very, very small.

 

Ah! So "the lad" is some kind of self-referential affectation then. As
is "we".

Makes perfect sense.

 

Check the circuit board thing in the handlebar section.

It controls (variously) rev limiter, immobiliser, flasher unit, starter
motor control????,
CDI unit and half a dozen things which a universal(1) board might possibly
connect to.

Very prone to water ingress shorting out and/or rusting the board (2)

Long shot but worth looking at since it will give you a very useful tray to
support the can
before you apply the matches. <g>

Dave

(1) Universal - fits nothing in this universe
(2) Mechanics quote - They all go like that sir

 

Checked the exhaust? I had exactly those symptoms when a wasp
built a nest in my trail-bike's spark-arrestor(!).

--
Ivan Reid, Electronic & Computer Engineering, ___ CMS Collaboration,
Brunel University. Room 40-1-B12, CERN
GSX600F, RG250WD. "You Porsche. Me pass!" DoD #484 JKLO# 003, 005
WP7# 3000 LC Unit #2368 (tinlc) UKMC#00009 BOTAFOT#16 UKRMMA#7 (Hon)
KotPT -- "for stupidity above and beyond the call of duty".

 

Not quite, grammar was never a strong point of mine, but 'he' bought
them, 'we' fetched them

But to conclude should anyone google the thread, the problem was because
we swapped the wiring harness over, the engine was a Speedfight 1, the
harness was a Speedfight 2. The pick-up on the flywheel is wound
differently & had to be changed over, we/he/I now have a fully revving
engine again.