Tailpipe question
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Junior User
Joined: Feb 2011
Posts: 55
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From: Algiers, Louisiana
Tailpipe question
First, the basics: 09 SCREW 4.6L V8, bone stock, 63K miles.
Over the Thanksgiving holidays I put about 1800 miles on my truck. I've noticed an accumulation of black soot on my tail pipe. Not a lot, but some.
Also, my highway gas mileage is down some, from 21-22 to 20mpg.
My vast experience with engines tells me that my engine may be running rich, which would explain the loss of gas mileage.
I wanted to post a picture, but "You may not post attachments".
Is this something to be concerned about?
Thanks in advance.
Over the Thanksgiving holidays I put about 1800 miles on my truck. I've noticed an accumulation of black soot on my tail pipe. Not a lot, but some.
Also, my highway gas mileage is down some, from 21-22 to 20mpg.
My vast experience with engines tells me that my engine may be running rich, which would explain the loss of gas mileage.
I wanted to post a picture, but "You may not post attachments".
Is this something to be concerned about?
Thanks in advance.
Freshman User
Joined: Oct 2013
Posts: 38
Likes: 0
From: Yankee in the South
First, the basics: 09 SCREW 4.6L V8, bone stock, 63K miles.
Over the Thanksgiving holidays I put about 1800 miles on my truck. I've noticed an accumulation of black soot on my tail pipe. Not a lot, but some.
Also, my highway gas mileage is down some, from 21-22 to 20mpg.
My vast experience with engines tells me that my engine may be running rich, which would explain the loss of gas mileage.
I wanted to post a picture, but "You may not post attachments".
Is this something to be concerned about?
Thanks in advance.
Over the Thanksgiving holidays I put about 1800 miles on my truck. I've noticed an accumulation of black soot on my tail pipe. Not a lot, but some.
Also, my highway gas mileage is down some, from 21-22 to 20mpg.
My vast experience with engines tells me that my engine may be running rich, which would explain the loss of gas mileage.
I wanted to post a picture, but "You may not post attachments".
Is this something to be concerned about?
Thanks in advance.
Also sounds like maybe you were cleaning some some excess carbon. Realistically though, different fuel blends that went in your tank in different areas are likely the reason to notice some extra carbon.
Thread Starter
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Junior User
Joined: Feb 2011
Posts: 55
Likes: 0
From: Algiers, Louisiana
You must have followed me, I also did about 1800 miles over Thanksgiving! Questions, 1did you have the whole family, and generally extra cargo, bags, etc? 2Were you even just a little bit in a hurry to get to your destination? 3Were you mostly on 75mph interstates, instead of 60-65mph back roads? Any of those things could cause your MPG to drop 1-2.
Also sounds like maybe you were cleaning some some excess carbon. Realistically though, different fuel blends that went in your tank in different areas are likely the reason to notice some extra carbon.
Also sounds like maybe you were cleaning some some excess carbon. Realistically though, different fuel blends that went in your tank in different areas are likely the reason to notice some extra carbon.
2 - The major part was a one day, round trip from New Orleans to Memphis. That was a long day.
3 - Most was on I-55 and on the Lake Pontchartrain Causeway. Speeds were 70-75
I did fill up at different places, so the different blends and additives may have something to do with it. It's not that bad, just noticable.
Freshman User
Joined: Oct 2013
Posts: 38
Likes: 0
From: Yankee in the South
1 - No luggage, just people, 4 or 5 adults
2 - The major part was a one day, round trip from New Orleans to Memphis. That was a long day.
3 - Most was on I-55 and on the Lake Pontchartrain Causeway. Speeds were 70-75
I did fill up at different places, so the different blends and additives may have something to do with it. It's not that bad, just noticable.
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