Peugeot 103 Performance

This is an open discussion on a poor performance of a Peugeot 103VS (Vario 1971 first generation).

The moped lacks of power runs very hot and has little acceleration.

I almost lost interest, I decarbonized the exhaust port, adjusted the timing etc..etc...

How much does a weak spark affects performance to this point ?

How would I check for compression (ideally 120 lbs/inch) ?

The engine almost seems to four stroke or choke.

I have a new starter coil, condenser and points ready to install.

Please help before I eradicate the engine all together and slap a Lifan 90cc on it instead.


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