RAW FUEL IN EXHAUST

[BUNNY]

LOTS of white smoke when started. What would make it dump raw fuel into the exhaust?

[fordstang93]

Typically you will get black smoke with raw fuel......thus the reason these trucks dump black smoke from a stop and then once the turbo is going they don't. the black smoke is form the extra fuel that is not burning.

White smoke can be normal in cold mornings but if you are getting it after warmed up and at idle then you be burning coolant? Are there any tints of blue to it? Have you checked for any codes or ever done an EGR cooler replacement or delete?

[Dave]

Originally Posted by fordstang93

Typically you will get black smoke with raw fuel......thus the reason these trucks dump black smoke from a stop and then once the turbo is going they don't. the black smoke is form the extra fuel that is not burning.

White smoke can be normal in cold mornings but if you are getting it after warmed up and at idle then you be burning coolant? Are there any tints of blue to it? Have you checked for any codes or ever done an EGR cooler replacement or delete?

White smoke with a raw fuel smell in cold mornings is not normal at all. There is a new reflash that takes care of this issue.

What causes this is sticking injector spool valves. 15w40 and cold temps dont mix well