I have a 2005 T600 Kenworth with a C15 CAT. I recently rebuilt the motor but did not replace injectors or head. All seemed fine. The truck ran fine for a week after the rebuild and then it started black smoking. I put a few gallons of fuel conditioner in the tanks and changed filters. The smoke cleared up. The truck sat and idled overnight and then black smoked excessively on throttle the next day. When I say excessive I mean black soot anything and everything around the truck. When the truck got back to the yard it just black smoked/soot on the ground excessively at idle. Ive done injector cut out test all checked out fine. Truck isn’t throwing any codes. Truck cranks right up no slow start. Fuel pressure is running around 70 on gauge while going down the road. (That seems low to me) I’m at a loss as to what it could be. Turbo has been checked out and is fine. I’m not sure what else to check/try.
Fuel lines aren’t stopped up. Any ideas would be greatly appreciated!!!! I have a 3406e CAT in my personal truck so not tons of experience with the Acert. I have several friends that have CAT motors and we’re all out of ideas.
Excessive Black Smoke HELP
Discussion in 'Experienced Truckers' Advice' started by 379LNPete, Jun 10, 2021.
-
-
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.
-
Any of the boots around turbo piping/charge air cooler. Are you losing any boost?
slow.rider Thanks this. -
Sounds like turbo even though it checks out.
Mine wasn't spinning fast enough when I had the same smoke problem. 2005 w900 isx.slow.rider and Diesel Dave Thank this. -
slow.rider Thanks this.
-
Might recheck injector adjustment, if set wrong they can cause excessive black smoke.
Is there a restrictor gauge or boost gauge to see if turbos are getting enough air?
If it's an acert make sure an iva isnt hanging open, there maybe be a code in ecm, or when you pull valve cover you can see plunger hanging down and it wont return easy prying it up. -
Black smoke = fuel. Too much fuel and not enough air. From what you have posted so far I would take a close look at the air filter and all intake system.
Artax Thanks this. -
My money is still on the turbo.
-
Back in the day
Black smoke was big power.God prefers Diesels Thanks this. -
Brettj3876, Roberts450, drivinhome and 2 others Thank this.
Trucking Jobs in 30 seconds
Every month 400 people find a job with the help of TruckersReport.