Hello.
I'm new to this forum and to MB, but i'v been reading here for about two weeks and I didn't find something that would help me...
I got a 80cc engine that says "Thunder industries" (i'm guessing its just a re-branded china stuff) and I did about 115km with it running 1:16 fuel ratio.
It was all good until one day, about 3 hours after i rode it (and then it was all fine) I wanted to ride again but then when it started the engine (after a little struggle) sounded kinda weird and it died quickly. I managed to make it start for one or two times after that but it wouldn't idle and it would act weird. Now it wouldn't start at all.
I checked for spark with three different plugs and its good, installed a new ngk iridium number7 plug, tried moving the clip on the carb needle one notch up and one down neither help so I put it the stock middle pos.
I removed the carb (it the one with the black plastic air filter) and checked for the air filter foam and it had some oil in it that i thought might cause the air to not reach the engine so I soaked the foaf, I checked the carb intake tube gasket and it looks good) there was some of the gasket that "blocked" a little of the way so I cut it (I hope I didn't do any damage there), I replaced the muffler gasket cause it was leaking, removed the head to see if the metal gasket was blown and it was all good.
Beside that I noticed that if I spin the rear wheel very slowly with the clutch engaged then the it would not keep its compression, is that normal? cause i'm only in the break-in and i kept under 20mph and not longer then 30min rides.
So I really don't know that else to do...
Any help is appreciated.
I'm new to this forum and to MB, but i'v been reading here for about two weeks and I didn't find something that would help me...
I got a 80cc engine that says "Thunder industries" (i'm guessing its just a re-branded china stuff) and I did about 115km with it running 1:16 fuel ratio.
It was all good until one day, about 3 hours after i rode it (and then it was all fine) I wanted to ride again but then when it started the engine (after a little struggle) sounded kinda weird and it died quickly. I managed to make it start for one or two times after that but it wouldn't idle and it would act weird. Now it wouldn't start at all.
I checked for spark with three different plugs and its good, installed a new ngk iridium number7 plug, tried moving the clip on the carb needle one notch up and one down neither help so I put it the stock middle pos.
I removed the carb (it the one with the black plastic air filter) and checked for the air filter foam and it had some oil in it that i thought might cause the air to not reach the engine so I soaked the foaf, I checked the carb intake tube gasket and it looks good) there was some of the gasket that "blocked" a little of the way so I cut it (I hope I didn't do any damage there), I replaced the muffler gasket cause it was leaking, removed the head to see if the metal gasket was blown and it was all good.
Beside that I noticed that if I spin the rear wheel very slowly with the clutch engaged then the it would not keep its compression, is that normal? cause i'm only in the break-in and i kept under 20mph and not longer then 30min rides.
So I really don't know that else to do...
Any help is appreciated.