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Bear tracker weak spark

dave2

By dave2
in Yamaha ATV Forum

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dave2 Apprentice

dave2

Posted
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Hey folks,

On my quad (250cc yamaha 4 stroke motor). It's actually a Jainshe Puma 250, but it's just a renamed beartracker. It seams like the spark is a little weak. Starts up and runs fine in warm weather when I don't need the choke, but as soon as you choke it, it has to start the first crank or it won't start without a bunch of sweat that ends up usually with a shot of ether. As soon as it starts and warms up, no problems until it sets overnight or several hours. When I pull the plug and crank it, it has a blue spark, but not the tuff guy look that you see on a car or lawnmower.

The plug is gapped IAW the book (forget what it is at the moment). Could the coil be bad, or bad connections somewhere?

Any ideas?

Thanks,

Dave

DirtDemon Veteran

DirtDemon

Posted
Posted

Connections could definately be the problem, check them all, including the spark plug boot to the coil wire. There are tests you can perform to check your electrical and ignition components. A manual or maybe a dealer service tech can help you with that.

dave2 Apprentice

dave2

Posted
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Posted

Thanks Folks! Things aren't always what they seem though. The intake boot between the carb and jug was cut a little from a (I guess) too narrow clamp. Must have been that way from the time I installed it and sucking air. Anyway, ordered a new one. Just out of curiosity and cause I saw a bottle setting close by, I smeared a nice coat of gorilla glue around it. Thing hasn't ran better since I bought it.........

Thanks, Dave

ATVmechanic Enthusiast

ATVmechanic

Posted
Posted
Thanks Folks! Things aren't always what they seem though. The intake boot between the carb and jug was cut a little from a (I guess) too narrow clamp. Must have been that way from the time I installed it and sucking air. Anyway, ordered a new one. Just out of curiosity and cause I saw a bottle setting close by, I smeared a nice coat of gorilla glue around it. Thing hasn't ran better since I bought it.........

Thanks, Dave

You are absoultely right about things not always seeming wha they are. Glad you fixed your issue.

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