Absolutely right! A stuck open injector will allow fuel in too early, and it will knock loudly when that happens. Overfueling might make the "diesel knock" a bit louder, it won't sound at all like a stuck open injector will. The sound can be different on the injection pump type used too, constant beginning-variable end of injection like most inline pumps and some rotary pumps are, or variable beginning-constant end of injection pumps like Stanadyne and Delphi rotary pumps. Inline pumps can be built with plunger helix cut that way too, but seldom are.
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Today's Featured Article - Oliver 550 Purchaser Checklist - by Greg Sheppard. Pound for pound the 550 is better than anything I've seen. It has great power for its size and can really hunker down and lug. Classified as a 3-bottom plow depending on soil conditions. I personally don't think it can be beat for a utility tractor in the 40 HP range. They are extremely thrifty on fuel, at least my DSL is. Most drive train parts are fairly easy to get. Sheet metal is probably the hardest thing to
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