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Post by allmightyme on Aug 10, 2006 23:35:18 GMT
Hi
i have BT49QT-12 and i have passed 700km. Changed engine and transmision oil, but still engine lose torque at 25-30 km/h for 5 second. Is the transmision still in development? What the problem?
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Post by Rusty on Aug 11, 2006 8:02:31 GMT
Bet you any money that somebody mentions valve clearances  |
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Post by ally1756 on Aug 11, 2006 12:11:41 GMT
yeah valve clearences lol
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Post by allmightyme on Aug 14, 2006 22:31:47 GMT
Sorry i dont seem to understand.What is valve clearences?
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pdg
Regular
Posts: 18
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Post by pdg on Aug 19, 2006 21:55:45 GMT
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Post by allmightyme on Aug 20, 2006 0:06:04 GMT
Will this guide be ok for my baotian model, the engine tipe is 139QMA.
Also, exsept that i lose torque,( not allways at 25-30, sometimes at 20,40 km/h), i have problems to start the engine, i must use a little gas, and also when i stop with my scooter sometime engine stop to work.
Are all these thingd say that the problem is in valve clearences?
Mamy, many thanks to all!!!!
p.s. i also once find mixture of gas and oil in the end of air cleaner.I use paper to dry the spounge.
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pdg
Regular
Posts: 18
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Post by pdg on Aug 20, 2006 11:58:17 GMT
Yep - that's the guide you need, mine is the same engine.
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Post by Scootin on Aug 21, 2006 14:41:42 GMT
I hate to mention the "V" word, but I had a similar problem. Loss of power for a second or so at a time. Found that my intake valve was out of adjustment. Adjusted the valve & problem went away |
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