the compression test isnt accurate on the YFZ brcause of the decompression valve.
i dont know and way to disable it
i dont know and way to disable it
Compression Test.
Trying to do a compression test on a yfz- is there anyway to disable the decompression valve so we can see how much compression it has?
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so there is no way to check the compression in these quads? so how do you know when its time for a piston change? when it starts blowing oil and running like crap?
I think thats what most guys go by lol. Don't fix something that isn't broke haha.
On these motors you have to do a leak down test
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