2006 Piaggio 125 LC power loss By bing (Read 4,925 times)

[bing]

I have returned the engine to the original settings and tested my compression which is OK. The engine starts and runs very smooth up to 1/2 throttle and then returns to the original problem when apply more than 1/2 throttle.

[89newbie]

4 valves, secondary air system, cat, all advanced for the year bike. Piaggo admits they have a valve problem, and since it is a real thing I would contact a dealer and find out if any recalls are still present.

[bing]

Problem solved : 'Spark Plug Suppressor Cap'

Thanks every one for helping me with my problem on my x8 125. It now starts and runs very smooth! but only can maxim 95 KPH. ? I am going to leave the 120 main jet instead of the 105 standard and see the plug colour after 1000 mls. I am open to any comments.

[Alleyoop]

Check the Diaphgram for rips or tears, If it ran good with a 105 and now running with a 120 and still not up to par I think maybe the diaphgram is leaking and not Raiseing the Needle out of the main jet all the way. And that is probably why it runs better with the 120 WHICH IS WAY TO BIG but it is allowing more fuel compensating for the cylinder with the needle not riseing out of the main 105 jet.
Alleyoop