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Honda dirtbike compression question
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<blockquote data-quote="tacoma2002" data-source="post: 5390412" data-attributes="member: 22551"><p>A partially stuck valve or rings are the only things that can cause this issue if it was running well when parked.</p><p></p><p>You can put a little motor oil down in the cylinder and let it sit for a few minutes. If this raises the compression for a few "compression strokes" chances are you've got a collapsed or broken ring. If the engine was "stuck" when you first tried turning it over you could have broken a "stuck" ring causing the issue.</p><p></p><p>Id pull the 10mm valve cover bolts and take a peak at the valves as stated before. See if they're actually moving or one is stuck down a bit. If one is stuck use a good penetrating oil around the valve guides...be generous. Let it soak; repeat. Chances are you'll free it up.</p></blockquote><p></p>
[QUOTE="tacoma2002, post: 5390412, member: 22551"] A partially stuck valve or rings are the only things that can cause this issue if it was running well when parked. You can put a little motor oil down in the cylinder and let it sit for a few minutes. If this raises the compression for a few "compression strokes" chances are you've got a collapsed or broken ring. If the engine was "stuck" when you first tried turning it over you could have broken a "stuck" ring causing the issue. Id pull the 10mm valve cover bolts and take a peak at the valves as stated before. See if they're actually moving or one is stuck down a bit. If one is stuck use a good penetrating oil around the valve guides...be generous. Let it soak; repeat. Chances are you'll free it up. [/QUOTE]
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Honda dirtbike compression question
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