Thread: Start up Smoke
View Single Post
  #4  
Old Thu, January 7th, 2010, 09:48 PM
cleatus12r's Avatar
cleatus12r cleatus12r is offline
F Your Yankee Blue Jeans
  
Join Date: Jan 2009
Location: Somewhere in Montana
Posts: 2,665
cleatus12r is a name known to allcleatus12r is a name known to allcleatus12r is a name known to allcleatus12r is a name known to allcleatus12r is a name known to allcleatus12r is a name known to all
Default
My truck has always smoked for the first 5-10 minutes after a sub 15 degree start. It was -31 here today and it started right up.....but smoked pretty good until I left the house 20 minutes later. I've also got 130K on my truck and it DOES need injectors.

The glow plugs are on for 120 seconds when the engine is that cold. Once they turn off, the engine is relying on compression heat to burn the fuel efficiently.

The smoke, if it smells like raw diesel fuel, IS unburned fuel. The stock setting on the chip DOES NOT use the original PCM for anything.

I replaced the glow plugs in my friend's truck about a month ago....even though they tested fine by every measure of the word. The difference in cold starting is night and day.
__________________
Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
Reply With Quote