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Re: 03 I'national 4300 DT466 Repeated Fuel Injector O-Ring Fail
Posted to HD/Fleet Forum on 10/31/2018 4 Replies

I agree. Something is cooking that pink o-ring and it pretty much has to be combustion gas. I hope the fuel and oil is not reaching those types of temperatures inside the cylinder head.

The amount of time between failures fits with a small combustion gas lea... Login to read more.

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