Bigdog
Full Access Member
Ok can you have a crack in the head and the only thing thats wrong is a rough idle and a little miss at speed when at operating temp.
probably not. if you have either, i think you are going to find oil in the coolant or coolant in the oil.
how is your air cleaner?
did you get a code reader? i know that you are down under.
idm codes?
With no mixing of oil and coolant I would rule out a head or head gasket issue. Also with no coolant loss that tells me your heads/gaskets are fine. I really don't understand the rust in the intake unless you're sucking in some really humid air. Your rough idle and miss could be caused by a bad or clogged fuel injector.
With no mixing of oil and coolant I would rule out a head or head gasket issue. Also with no coolant loss that tells me your heads/gaskets are fine. I really don't understand the rust in the intake unless you're sucking in some really humid air. Your rough idle and miss could be caused by a bad or clogged fuel injector.
I have to agree..
rust by itself, while not healthy for the engine in particulate form, my not be the sign of head/head gaskets..
at least not on a 7.3...
I agree with AK.. I think you need to check codes and buzz check the injectors..