02 7.3 cold smoke

[hondaracer315]

Yeah but mine is all colors. First start it it blows blue black and grey then will smoke blueish white rest of the time and just smell of fuel

[irishluck]

Doesn't the blue indicate burning oil?

[Galaxie]

Diesel can be blue, gray, white, blue, black. All depends on temp, pressure, buring of the fuel or not.

My 7.3 did every color above when cold. My 6.0 is blueish when cold and when on a big tune.

Blue is not always oil. But diesel is like an oil anyway.

[Galaxie]

Irish, love that truck dude! Looks great.

[hondaracer315]

Well I don't know where to turn I have been looking for help on this issue for a full year now! Ive tried everything I can think of and research. The last things I can think of are either a PCM reflash hopefully reflashing the Baro sensor. Or doing a valve seal job. Anybody know of anything just list it because Im about giving up. I don't want to suffice for a 395 compression as being the problem.

[irishluck]

Originally Posted by Galaxie

Diesel can be blue, gray, white, blue, black. All depends on temp, pressure, buring of the fuel or not.

My 7.3 did every color above when cold. My 6.0 is blueish when cold and when on a big tune.

Blue is not always oil. But diesel is like an oil anyway.

Ah ya kind of forgot about the oil fuel thing.
Gas and diesel is quite different

Thanks!

Ill have to get a few pictures of the interior now for ya.

Over the past month I've redone a lot of it!

[hondaracer315]

Had the pcm flashed today and it still smokes this afternoon. That is it I have done everything I can possibly do to it short of replacing the motor. I am going to run it and say screw it. Thanks for the help if anybody has any other ideas just shoot me a pm thanks.

Chris

[irishluck]

Condensation?

That's what someone told me

[Naterenfo1]

Out of curiousity - did you check your fuel pressure while all this was happening? might just have a bad fuel pump! And I didn't read anywhere about you replacing or having replaced your injectors? whats your fuel mileage? The reason I say fuel pump is because you said when you turn it off, and turn it back on again the fuel pump is priming the system, it shoots more pressure than needed to get everything all full of fuel then dials it back to a running pressure and if the pump is worn, it won't have the correct pressure. Not sure if these trucks have fuel pressure regulators, but may want to check into that as well.

[hondaracer315]

8 brand new injectors. I have not checked fuel pressure, I would have not thought about a fuel pump. What are the readings supposed to be that is what I need to know and how do I test it with what tools? Can I do this or do I need a mechanic? Mileage is 12mpg hand calc. Also I'm hearing the fuel pump everytime I turn the key to run wait to start I never heard that before. Thanks