Black smoke
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Junior User
Joined: Nov 2010
Posts: 76
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From: Spring Lake, NJ Eureka,NV
Black smoke
I did a search for this topic but only came up with vehicles that had low miles or DPF issues. So...sorry if this is a repetitive topic.
My truck has 137,000 miles on it. The DPF was gutted when I bought it. I noticed black smoke when I stomped on the throttle. After tuning and removing the gutted DPF and replacing with a straight pipe, I still get black smoke when I hit it hard.
I've only had this issue on a diesel truck once before and that was with my naturally aspirated Mercedes Unimog at high altitudes.
What could be the potential cause? Too much fuel? Sensor going bad but not showing up as a trouble code? Soot built up from a gutted DPF and regens not turned off previously?
Thanks in advance.
My truck has 137,000 miles on it. The DPF was gutted when I bought it. I noticed black smoke when I stomped on the throttle. After tuning and removing the gutted DPF and replacing with a straight pipe, I still get black smoke when I hit it hard.
I've only had this issue on a diesel truck once before and that was with my naturally aspirated Mercedes Unimog at high altitudes.
What could be the potential cause? Too much fuel? Sensor going bad but not showing up as a trouble code? Soot built up from a gutted DPF and regens not turned off previously?
Thanks in advance.
Lead Foot User
Joined: Nov 2008
Posts: 773
Likes: 0
From: Saskatchewan, Canada
Black smoke is a normal by-product of a diesel engine, try and show me one that doesn't produce it? You won't notice it with the DPF on as it is built to eliminate the black smoke. Once it's gutted or gone then there is nothing stopping it. I'd be worried if you didn't see any.
Super Moderator
Joined: Aug 2008
Posts: 37,375
Likes: 1,860
From: Frederick, MD
If you are driving down the road at a steady pace and it is clean...you're ok. Put it to the floor and you have just added a ton of fuel. Its gonna smoke.
Once the turbo's get caught up it should start to clear up.
One potential issue of a smoking diesel is an overfueling condition. Although rare, regular oil checks for make oil is your way to ensure that is ok.
So as long as your oil level is not increasing...drive the truck.
Once the turbo's get caught up it should start to clear up.
One potential issue of a smoking diesel is an overfueling condition. Although rare, regular oil checks for make oil is your way to ensure that is ok.
So as long as your oil level is not increasing...drive the truck.
