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black soot in tail pipe is that normal?

PASTOR SCOTT

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PASTOR SCOTT Enthusiast

PASTOR SCOTT

Posted
Posted

hey guys

 

noticed black soot in tail pipe if you rub your finger in it. checked my other cars and theres nothing or very little. If you have an 04 5.3 burban let me know if yours is the same. to me it means running rich. now i heard that some times the K and N oil from filter can get on MAS sensor can that be it, or maby i need to clean my K and N after 12000 miles help guys

 

:lol::cheers::smash::smash:

 

 

 

Scott

black&grayHD Enthusiast

black&grayHD

Posted
Posted

My truck has soot, and it's bone stock. The vette and my mom's SUV (Ford) have it too, so I wouldn't be worried about it. If you're concerned about the way your truck is running you can always check the plugs or have the dealership run a diagnostic to determine your A/F ratios :lol:

Supurban Enthusiast

Supurban

Posted
Posted
My truck has soot, and it's bone stock. The vette and my mom's SUV (Ford) have it too, so I wouldn't be worried about it. If you're concerned about the way your truck is running you can always check the plugs or have the dealership run a diagnostic to determine your A/F ratios :cheers:

 

 

 

Same here - stock 04 Sub 5.3L has black soot in tailpipe @ 7000 miles. I noticed it last week, but it seems to be running fine. :lol:

  • 4 weeks later...
2001silverado Enthusiast

2001silverado

Posted
Posted

hey guys

 

noticed black soot in tail pipe if you rub your finger in it. checked my other cars and theres nothing or very little. If you have an 04 5.3 burban let me know if yours is the same. to me it means running rich. now i heard that some times the K and N oil from filter can get on MAS sensor can that be it, or maby i need to clean my K and N after 12000 miles help guys

 

I had the same problem with a 91 Camaro V6. . heavy build up of soot .. ended up the cat converter was clogged. I replace it and what a difference. It reved up quicker. eventually all the soot would work it's way out now that the exh is free.

redvett Senior Enthusiast

redvett

Posted
Posted

Since gas has no lead anymore your pipes will always be black. If your worried and have no SES light have someone with a scan tool scan and read fuel trim and see where it is. :cool:

03GMCinBC Enthusiast

03GMCinBC

Posted
Posted

yup, here too. I had asked the same question several months ago. I was told that that is the way it is. I only noticed it after I put a SS tip on the exhaust. It really shows up on the shine. It does wash off easily and the truck runs great. I had the dealer do a test on the emissions and it passed with flying colors...

 

:cool:

94z71 Enthusiast

94z71

Posted
Posted

Atleast you don't have a 94 tbi, I have black soot pouring out of my tail pipes, runs great though. Buddies 03 mustang has around 25k miles, i can't find a single spec of black soot in the exhaust pipes... he must clean them out at night when I'm not looking or something, he ribs me about the black smoke out of my pipes on initial fire up, bi-product of cold start with a off-road cat, not my fault. my stainless steel heavy duty exhaust tips have been on my truck for 6 years, still no rust - so don't buy the cheapies that rust after a year - you can only imagine the soot deposits in my pipes.

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