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post #8 of Old 05-03-2009
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OK, I'll guess!!!

Partial plugged exhaust.

No air out, no air in, no compression.

Usually the engine will start ok and idle but when you apply power it grunts and gets hot but no power.

If there is not a lot of blow by then the rings are sealing pretty good.

You can check the over all condition of the engine by placing the suspect cylinder on tdc and pressurerising the cyl with co2 and listen to see if the air is escaping from the intake, exhaust, engine vent.

If the leak is at a valve pull the cover and check the adjustment.

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