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Shibaura s773i

Middle cylinder of 3 cylinder is not firing looking for engine or parts and or advice on problem.getting ready to take head off checked push rod ok.thanks for any help bill

edward moller

before you pull the head off, check the tightness of the delivery valve holder on the injection pump. i have seen many of them work their way lose. causing the the injector pressure to drop.


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If the middle cylinder is not firing, and there is white smoke in the exhaust, the engine has a compression problem. If there's no smoke, check the delivery valve as ed moller suggested.