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Old 03-06-2017, 01:37 PM
weekend warrior
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Default compression test

suzuki king quad 300
i did a cold compression test this morning.i got 60 lbs,then i started it it ran for 5 minuts,did another test i got 100 lbs.is this good bad or ok? let me know someone please,thanks
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Old 03-06-2017, 02:34 PM
hydrex's Avatar
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There is often a compression release device on the camshaft of ATV's to make em easy to start. If it runs good, starts good and does not burn oil, I wouldn't worry. If it has a pull start, it should pull kinda hard. My Arctic Cat 400 pulls pretty hard to start and my 500 pulls like pulling about 10 chainsaws at once.
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Old 03-06-2017, 03:18 PM
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You should not test compression on a cold engine. Run engine up to operating temp then stop. Allow oil to drain back into pan. Open throttle wide open then connect comp tester and allow 4 revolutions to test compression. this will give you an accurate reading.
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Old 03-06-2017, 06:41 PM
weekend warrior
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Default compression

thanks for the advice
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