s5 NA here, smokes for about 5 minutes on startup, then runs like a champ...any suggestions?

 

Are you getting really bad gas mileage?

 

not sure yet, afraid to run it long enough to find out.

 

what color is the smoke, and whats it smell like

 

yeah color and smell is a first man.

blue - oil
black - gas or bad emissions
white - coolant
grey - rich or normal

also u say it smokes are we talking a bug screen or a little out the pipe that disapates like 6" to a foot from the tip?

I am gonna lean against a bad O2 but we need more info

 

white...lots of it, i dont think a bad O2 could cause that could it?

 

may need new coolant seals my friend

 

this requires tearing the motor down doesnt it?

 

Yeah. Go ahead and test your coolant seals first.

 

how do you test them?

 

having same problem, but mine's kinda bluish and it's like a smoke-screen in the morning... but after the engine is in normal temp, it runs like nothing's wrong. gas mileage? 1/4 tank driving 40 miles.

 

mine does the exact same thing its like a sweet smell it defenatly the coolent seal... but how do u go about testing this