Force 125 a bit rough at times...

[fmt2bx]

Great. So the fuel starvation and air-leak in the fuel system is caused by a faulty quick disconnect. Outstanding troubleshooting.

Thanks Jiggz but it was a laborious troubleshooting believe me!!! The fuel disconnect was brand new, i never suspected that it could be the problem. Turns out that the 2 days old part was in much worse shape than the 30 years old motor!!!
At least now the fuel system has been updated with all new stuff.

Cheers