Engine/Transmission (1998.5 - 2002) Puff o' Smoke on start up

[WadePatton]

Do they all do this? I don't think mine always did. I noticed it before I put the UFM on. It does it every start hot or cold--just a little black puff.



I'm going to check that IAT sensor one of these days.

 

[John Berger]

Sounds normal to me.

 

[jerrethomas]

it's normal, mines done it since i brought it home. it's just because the engine goes from cranking to a 800 or about idle really quick.

 

[SOOT]

It's normal



My Mom's (see sig) never made one puff of smoke until it had around 10,000 to 12,000 miles on it.

 

[truckstom]

yes it's normal... .

 

[ToolManTimTaylor]

Put a set of bd 7's in and then a puff is a COUGH