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Quad YTM yamaha 225 moto 4 no spark

Turns over but no spark

Posted by Anonymous on

6 Suggested Answers

  • 2 Answers

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Posted on Jan 02, 2017

  • 6 Answers

SOURCE: hi i have a 1984 yamaha moto 4 quad it won't stay

Are you sure you have gas? How long will it run until it dies? If it dies out once it warms up then you have a coil problem. More than likely what is happening though is that you have enough gas to start the engine but the flow rate is affected somehow and the carbs are not able to continue to supply the proper fuel amount. I would suggest rebuilding the carbs.

Posted on Sep 05, 2009

  • 2050 Answers

SOURCE: moto 4 problem

One of two thing, your fuel shut off isn't working, or is dirty.....
or the float in your carb isn't adjusted, or the needle that the float runs is not seating properly.

Posted on Dec 02, 2009

  • 7 Answers

SOURCE: yamaha moto 4 atv no fire to spark plug help

Bad coil, bad spark control module, bad safety switches (neutral switch/kill engine switch/loose wire to key switch)

Posted on Jan 21, 2010

  • 108 Answers

SOURCE: my yamaha moto 4 quad

There could be a couple things

1. The throttle cables may be adjusted way and I mean Way to tight (not likely)
2. there is a possiblity the tech put the jets in wrong as the main jet and pilot jet look alot alike on that machine. Only difference is the hole size in the middle of them ( I have done that, thats how I know this)
3 Could be sucking air ( the most likely) from either the intake or the diaphram on the carb. Start the motor and have a can of spray carb cleaner ready to spray and spray the outside of intake and carb if the motor speed changes then it is sucking air.

Posted on Nov 05, 2010

  • 10 Answers

SOURCE: Hello- I hope you

Did you drain the gas and oil and put fresh in before starting and running? Because if not you could have killed your engine over time gas and oil go bad from sitting. Also maby a new spark plug idk what else maby do a compression test.

Posted on Nov 20, 2010

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