Hi Thomas only thing I can think of is that its not getting enough air is it the right filter as it may be not be allowing enough air through. As you probably know if you don't get the right amount of fuel & air it won't run right. Hope it helps cheers Paul
SOURCE: I need an electrical schematic for a 150 cc roketa
This is a Lynn Edwards hand drawn schematic (scroll down)
http://forums.atvconnection.com/chinese-quads/323218-150-cc-taotao-wont-start-no-spark-2.html
This should be exactly what you need. Took a while to find it.
Kelly
SOURCE: 2004 Quest 500--Starts fine. Will
The problem would appear to either be with the mixture or with the head.
Too rich a mixture (too much fuel) will cause black plugs - when you take them out do the engine and plugs smell of petrol? You need to adjust the carburettor. Mark where the throttle screw is to start with and then slowly screw it (in - I think) to reduce the petrol flow.
The other alternative is that their is a problem in the head. Does the engine blow a lot of blue/black smoke out when it is hot. If yes it means a full engine strip down!
The battery voltage on a Suzuki I had would drop low enough during cranking with the electric starter motor not allowing the spark to be strong enough to run, the voltage regulator also didn't function correctly once and as the battery voltage dropped during operation engine would start to bog down and cut out due to low voltage for the ignition system.
SOURCE: arctic cat snowmobile problems
yes but I would also suspect the carbs we not cleaned fully. main jets and emulsion tubes as well as the idle air circuit... these all are important for proper operation. you will need to pull the idle mixture screws out as well.... if they are plugged from the factory you need to drill into them and use an easy out to remove them
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