injector knock - Diesel Truck Forum -
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post #1 of 1 (permalink) Old 12-18-2012, 04:59 AM Thread Starter
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Question injector knock

hello, any help will be appreciated. my truck is 96 f250 xl 185,000 miles. injector has a definite knock to it. when it started it was at #8 hole. i pulled all 8 injectors had them flow tested all showed good flow and equal . i moved #8 injector to #2 hole. noise followed the injector. replaced with a rebuilt, same noise. replaced with a new injector, same noise. installed a known good "idm". no difference. truck idles and sounds terrible. above 1500 rpm seems to run fine.395-400 #s on compression on the bank with the noise. didn't test other side. any ideas on the noise?
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