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Kubota/Wacker Neuson/Hesston/IH/Ford/Other
isuzu qd40 starting hard after sitting overnight
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<blockquote data-quote="Tazza" data-source="post: 35135" data-attributes="member: 82"><p>It could be stuck valves.... You would need to pull the head off and get it tested for cracked and get the valves and seats ground.</p><p>Before you yank the head..... Check your valve clearance. You may be lucky enough for the adjustment to have screwed down somehow and it could be holding a valve slightly open. If you are getting no compression at all, i'd doubt it was a crack, if it was, it would have to be rather large to have no compression at all. If it uses rockers, get it to TDC and see if the inlet and exhaust rockers can be boved up and down slightly. If there is no gap, it could be holding the valve open slightly.</p><p>I hope its that simple!!!!</p></blockquote><p></p>
[QUOTE="Tazza, post: 35135, member: 82"] It could be stuck valves.... You would need to pull the head off and get it tested for cracked and get the valves and seats ground. Before you yank the head..... Check your valve clearance. You may be lucky enough for the adjustment to have screwed down somehow and it could be holding a valve slightly open. If you are getting no compression at all, i'd doubt it was a crack, if it was, it would have to be rather large to have no compression at all. If it uses rockers, get it to TDC and see if the inlet and exhaust rockers can be boved up and down slightly. If there is no gap, it could be holding the valve open slightly. I hope its that simple!!!! [/QUOTE]
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isuzu qd40 starting hard after sitting overnight
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