Little puff of white smoke when starting

[joecool911]

I'm assuming I'll need valve seals. Any way to do it without removing head or injectors? If I could figure out where tdc is for each cylinder valves should not fall in. Lol. #6 hard to do?

Edited November 12, 2014 by joecool911

[98whitelightnin]

My 98 would puff white on cold starts too until I switched to a p-pump, could be something other than valve seals.

[joecool911]

My 98 would puff white on cold starts too until I switched to a p-pump, could be something other than valve seals.

Like what? Approaching 200K miles.

[TFaoro]

Pissy injectors can cause it

[98whitelightnin]

Idk, my truck had 260k and the little puff bothered the heck out of me. I pulled the new injectors out and sent them back to contagious to have them checked, they sent me a whole new set and it still had the puff.

[joecool911]

I've got new injectors that were pop tested.

[Mopar1973Man]

When to be a bit concerned is when the little puff of smoke smells like engine oil. Then you have oil leak. If the puff smells like fuel then you most likely have a injector issue.

[joecool911]

Always smells like diesel smoke.

[mulcher812]

Could be a bad spring in an injector.

[rancherman]

is it every start up, or  cold only?        typically a  valve  seal  needs  time to  leak down,  so  an immediate restart  should be clean....    But on the other hand,  a hot piston will mask a pissy injector too.

....... pretty hard to race around and  smell that elusive  puff...  Pretty windy around here lately!

 

Should have  a blue haze  if it's  oil,  but  the sun  shining from different angles  can  change  the color big time.  

 

Lots of  definitive answers in my post!    LOL

[Texas CTD]

It might be something that no one can repair......... Cold weather?

[joecool911]

I was thinking about running a hose to the cab so I can diagnose exhaust smell ;)

[TFaoro]

Don't forget to take pictures when you do!! 

[Dieselfuture]

I thought white smoke was ether air in fuel, or some sort of moisture.