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Dalton318warrior

I need help with my warrior that wont run

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He said it is getting spark, so I dont think its the coil unless the spark is very weak. But even a weak spark should ignite the fuel.

If its getting gas and spark, that of course is whats needed to start. Try some Ether to see if it will at least try to fire. Another thing to check is compression. Pull the plug(s) and check it. The down and dirty way is to put your finger in the spark plug hole and turn the engine over. It should build enough pressure to make a loud hissing sound when your finger is removed at top dead center on the compression stroke. If there is no compression, or very little, Maybe a valve is stuck open or a a timing mechanism is broken or malfunctioning.

I dont know the Yamaha warrior, whether its two cycle or 4. If the warrior is a 2 cycle, then forget the valves sticking part.

Edited by Pure_Michigan

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