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Everything Dirt Bike
Make / Model Specific
Yamaha
Why Won't My 2007 Yz250f Start?
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<blockquote data-quote="AKmotorider" data-source="post: 111457" data-attributes="member: 1118"><p>I replaced the spark plug and checked for spark, which it has. I also did a compression test on it, which after about 20 kicks, read 75 psi and wouldnt go any higher. I'm guessing it has an auto decompressor so it wouldnt give an accurate reading, but is that normal compression if its autodecompressed? Or is it impossible to tell with a compression test? I have yet to do a leak-down test on it but from what I've heard it's a better idea than the compression test. If my compression comes out normal, then what else could be preventing my bike from starting?</p></blockquote><p></p>
[QUOTE="AKmotorider, post: 111457, member: 1118"] I replaced the spark plug and checked for spark, which it has. I also did a compression test on it, which after about 20 kicks, read 75 psi and wouldnt go any higher. I'm guessing it has an auto decompressor so it wouldnt give an accurate reading, but is that normal compression if its autodecompressed? Or is it impossible to tell with a compression test? I have yet to do a leak-down test on it but from what I've heard it's a better idea than the compression test. If my compression comes out normal, then what else could be preventing my bike from starting? [/QUOTE]
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Everything Dirt Bike
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Yamaha
Why Won't My 2007 Yz250f Start?
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