The past couple of weeks I have been seeing black smoke from the exhaust. It occurs on acceleration from a stop or low speed and at low rpm's. It lasts just a few seconds. It also seems to smoke more under heavy loads or up inclines. It has not done this since I have owned the truck. Just wondering if something is starting to fail. It has 84,000 miles.

Any suggestions or ideas?

Thanks, Ty

 

My '07 started smokin about 2 months after I bought it-then it really smoked after the Smarty!! Im not sure why it did, but it ran fan and didnt throw any codes so...on the Smarty went.

 

Well the normal check/change fuel and air filter. Maybe run a fuel additive to clean/lubricate pump/injectors. Maybe check see if you have a small boost leak somewhere in the system.Then again maybe its just getting broke in good and wants to show off.

 

a lot of people talk about black smoke being good. my old pickup a 96 would smoke like chimeny when i would get after it. my new pickup dosent much at all, but i dont drive this one the i stole it, havent pulled much with it yet only about 5000p. the 96 i got (i think) about 20,000p behind it, very very slowly on flat roads. smoked alot. thats when i lost the tranny and bought the 04.5

 

I wouldnt sweat it...there is a reason you see the big rigs blasting black smoke out along the interstate... just the diesel blowin through...enjoy it!

 

Perfectly normal. Don't worry about it. At slow speeds/rpms...your turbo has not spooled yet so it is getting more fuel to the cylinders than air to clear it off. Once the turbo is spooled good it will clear out the smoke. I can smoke a nice flume (at will) with the Smarty set on 9.....but stock it would smoke some too. It is very noticeable at night with car lights behind you.

Also, it will tend to smoke more if you baby it around alot...say for several days....and then get on it hard. It cleans out the exhaust system of soot.

 

I am pretty sure ulsd creates more smoke than the old stuff. I fueled at a pump the other day and almost immediately started nticing a good puff when accelerating. I filled up a few days later and from our on site tank(old style lsd) and the smoke dissapeared. Both tanks had PS & MMO. Has anybody else noticed this?
Joe

 

I do this and save the smoke for just the right time. My kids get a kick out of it, the wife just shakes her head