I've noticed recently after idling my pickup for long periods, it blows a lot of white smoke under acceleration. Any ideas what's causing this? Only thing I can think of is that fuel is building up and then it all blows out. http://www.youtube.com/watch?v=iSRk1A1C470 This was after idling in line to dyno for about 45 minutes.

 

Cylinders get washed down with unburnt fuel after extended idling periods. You should try and run a high idle if you start pushing 10 minutes of idle time. Does it do it all the time now?

 

No, the two dyno pulls after that had no white smoke. That dyno run was only the second time it's happened.

 

Are you aware of the fact that CUMMINS says to not idle these motors for more 3 minutes? You are not doing it any good at idle, a diesel cools off at idle ( in the combustion chamber.)

White haze CAN be caused by a timing issue.

 

Nope, was not aware of that. It only blows the white smoke during acceleration for a few seconds after idling for a long time. It's not hazing.

 

Excessive idle causes low combustion temp, unburned fuel which could contaminate your oil also.

 

So I put some Contagious Diesel 7x12 in last weekend and it's still blowing out a lot of white smoke if I let it idle. It's not losing any noticable amounts of oil or water. Anyone know what's causing this?

 

sucking air in the fuel line someplace?

 

I don't think so, it starts with the typical half crank and runs perfectly.

 

It could also be a seal in the turbo seeping some oil. Mine did that if it idled for to long and once the egt's got nice and warm it stopped until it cooled off again.

 

I forgot to mention I've also put a different turbo on since I originally pposted this thread .