steveluppino
New Member
- Local time
- 11:59 AM
- Joined
- Sep 21, 2019
- Messages
- 25
Hello,
I have been riding a freshly built 80cc 2 stroke for about a week. I thought it was a real gem. It has the standard pedal start that I thought of getting a zip starter but when I saw how fast the engine would start with pedalling I did not think I should bother changing it. But after the first time the bike or the engine had the first problem I knew it was the best choice how you have to practically tear yourself to pieces testing the bike to see if the problem is fixed by pedalling it to try start it and failing every time.
But anyway, the post which is about the problem I am having with the engine is what is of most importance. The engine was running fine for a full week since it was built then on the next ride it experience it's first problem when after a short stretch of medium to high acceleration it suddenly choked and slowed to a stop (with a full tank). I replaced the spark plug (which was black with carbon) with a new one and it started first time then I rode off again thinking the problem was fixed. But after riding another kilometer the same problem reccured this time the problem was terminal.
So I pedalled the bike home to look to fix it. I put a new mix of fuel, cleaned the carby, plug, fuel flow, all good, still no success. I checked the wiring to CDI took off kill then start the engine with success except very high idle then down to slow idle eventually cut out never to start again now no spark. I sit bike upside down and spin wheel while holding a screwdriver to lead to frame andno spark. Is it possible the CDI unit is not working or broke only after few kilometers?
I have been riding a freshly built 80cc 2 stroke for about a week. I thought it was a real gem. It has the standard pedal start that I thought of getting a zip starter but when I saw how fast the engine would start with pedalling I did not think I should bother changing it. But after the first time the bike or the engine had the first problem I knew it was the best choice how you have to practically tear yourself to pieces testing the bike to see if the problem is fixed by pedalling it to try start it and failing every time.
But anyway, the post which is about the problem I am having with the engine is what is of most importance. The engine was running fine for a full week since it was built then on the next ride it experience it's first problem when after a short stretch of medium to high acceleration it suddenly choked and slowed to a stop (with a full tank). I replaced the spark plug (which was black with carbon) with a new one and it started first time then I rode off again thinking the problem was fixed. But after riding another kilometer the same problem reccured this time the problem was terminal.
So I pedalled the bike home to look to fix it. I put a new mix of fuel, cleaned the carby, plug, fuel flow, all good, still no success. I checked the wiring to CDI took off kill then start the engine with success except very high idle then down to slow idle eventually cut out never to start again now no spark. I sit bike upside down and spin wheel while holding a screwdriver to lead to frame andno spark. Is it possible the CDI unit is not working or broke only after few kilometers?