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diesel goes knock knock knock

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FullPull
Join Date: Mar 2007
Posts: 11 WA State
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2007-03-30          140845

i just bought a old limegreen yanmar 240d 2 cyl diesel that was left out in the weather for 10 YEARS!! .. i know nothing about diesels... i drained all the fuel and got her to fire right up.... Knock!! Knock!! Knock!!! She Went!!!.. I was so HAPPY :)... i know these 2cyl diesels knock like hell...but it had no power and NO SMOKE!! .. is it true that bad injectors can cause excecive Knocking?? .. ....... some times it Knocks at idel..some times it knocks at higher RPM ....... when it knocks at a given RPM (FAST OR SLOW) i just speed it up or lower the RPM.. then it sounds OK..(for about one minute).. I HAVE TO ALWAYS ADJUST THE RPM TO AVOID KNOCKING.................. IS IT A ROD??. . . IS IT A INJECTOR OR THEINJUCTOR PUMP??.. . . IS IT THE TIMMING???? . .. ... .. .. ... .. .. .. .. PLEASE HELP!!!!
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