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Does your Acadia have excessive Black Soot/residue at exhaust tips and rear of vehicle?

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Discussion Starter · #1 ·
Has anyone noticed any black "soot" on their exhaust pipes and even on the
back of their Acadias? I have a 6000 mile vehicle that has black "soot" on the
tail pipes as well as on the back of the vehicle... you can actually write your
name in the fine dust. Needless to say we are headed for the dealership this afternoon. Could the vehicle really be burning oil at 6000 miles? Oil levels have been fine when we have checked them. I had oil changed at 3000 miles.
Or does anyone have any ideas at all?
 

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Re: BLack "soot" from exhaust

Just a little in the tailpipes, wipes right off each time I wash it.
 

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Re: BLack "soot" from exhaust

If you can write your name with no grease smearing effect, must be from the atmoshere where you back up against. Some nearby pipe emitting unclean air from wood burning stove?
 

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Discussion Starter · #4 ·
Re: BLack "soot" from exhaust

Just came back from dealership- they said it was from the carbon burning from off the gasoline... asked me what type of fuel I was using... I told them
regular Unleaded (Shell) and they said that was good- and that this was "normal" I told them it was not normal for a $40,000 plus vehicle to have black residue all over the back end of it... that I didn't see other new vehicles in parking lots, etc. with a black film all over the back of it.. and that my 2003, Chev. Trailblazer LTZ, never did this either and my Brother's brand new Saturn Vue wasn't doing this as well, and if this WAS normal, it is NOT acceptable as there is no way that I can keep this vehicle clean ...It was spotless Saturday and by this morning, the black powdery substance has returned to the tailgate area. They have scheduled me to bring it in next Monday, and they will run some "tests". In the meantime, I called another dealership and "inquired" about the situation, they said it did not sound Normal and their guess was that it was running "too rich"- fuel and air mixture is not right......
FYI- this vehicle is highway driven (60 miles round trip work week), and is garaged parked at home- no dirt roads traveled.
 

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Re: BLack "soot" from exhaust

I agree that it does not sound normal.
 

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Re: BLack "soot" from exhaust

i'll guess a bad tps ........... how does it run ?
 

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Re: BLack "soot" from exhaust

I have not seen any black soot but in colder weather the condensation from the exhaust is visible in the rear window. There is a big negative air space just behind the acadia so maybe it is picking up soot from there. I don't think soot is normal though.
 

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Re: BLack "soot" from exhaust

By far the rear hatch is the dirtiest part of the Acadia everytime I go to wash it, it gets dirty much faster than any other part of the car (except for the bugs on the front in the summer months). The air flow in the rear pushes all the dirt from the road up onto the rear hatch. If you have any condensation or wetness on the vehicle (maybe on cool mornings etc) all the dirt from the road sticks to the rear hatch. There have been times I washed the vehicle just because the rear looks dirty (the rest would be fine).

Now I am not saying this is soot from the exhaust in any way, just normal road filth. I do have black on the chrome exhaust tips, they do clean off easy but they make a mess out of the cloth I use to clean them. I think all exhausts get this carbon coating to an extent and the airflow in the back of the Acadia make it more noticable, but if it is getting on your paint on the rear hatch then there is something else wrong.

The forum member who put on the aftermarket Magnaflows, I wonder if he gets this carbon coating on his exhaust tips???
 

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Re: BLack "soot" from exhaust

If there is black soot inside the exhaust tips then there is a problem if not it is probably road grime. I have close to 7000 miles and i have no black inside the exhaust tips. Most of my driving is in town.
 

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Re: BLack "soot" from exhaust

johnway said:
The forum member who put on the aftermarket Magnaflows, I wonder if he gets this carbon coating on his exhaust tips???
I get a light black coating on the inside which wipes off very easily. Don't get it any where else.
 

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Re: BLack "soot" from exhaust

I only have 2300 miles and most of that is from being out on the road. There is no black soot in mine as of now.
 

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Have you experienced an excessive black soot/residue build up at your exhaust tips? Did you find any soot marks on the rear body/hatch?

My 2009 has had in my words excessive soot build up at the exhaust tips and yesterday when washing I found dry powder like black spots on the rear hatch that looked just like the exhaust soot. The Acadia runs fine. It took about 350 miles to build up. Maybe too many short trips.

Bobby
 

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Re: Black soot/residue at exhaust tips and rear of vehicle

I don't think mine is excessive; I think as you that too many trips around town contribute to this
 

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Re: Black soot/residue at exhaust tips and rear of vehicle

jsimms said:
I don't think mine is excessive; I think as you that too many trips around town contribute to this
Really shorts trips may be the problem. I have to take it on a real good run.


Bobby
 

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Re: Black soot/residue at exhaust tips and rear of vehicle

Yes! Yes! Yes! My 2009 has a lot of black soot in, on and around the exhaust tips, and on the hatch too! You can blame short trips if you like, but I have lived in this area my whole life with the same driving habits and none of my other cars had BLACK soot like this inside the exhaust tips! In fact, both a 1994 Ford Escort and my last car a 2004 Jeep Grand Cherokee V8 you could wipe the inside of the tip with your finger and...Nothing! I am wondering if the factory fuel mixture is to blame or inadequate catalytic converters.
 

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Re: Black soot/residue at exhaust tips and rear of vehicle

This not new to the Acadia. I have the soot problem, and back of the car being dirty as well. I however don't think the dirt on the rear is anything more then road grime being sucked up on the back of the vehcile.

The dirty back of the Acadia and soot in tailpipes has been discussed here before.

http://www.acadiaforum.net/forum/index.php?topic=2673.msg34082#msg34082
http://www.acadiaforum.net/forum/index.php?topic=2753.0
http://www.acadiaforum.net/forum/index.php?topic=5466.0
 

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Re: Black soot/residue at exhaust tips and rear of vehicle

bonk1313 said:
This not new to the Acadia. I have the soot problem, and back of the car being dirty as well. I however don't think the dirt on the rear is anything more then road grime being sucked up on the back of the vehcile.

The dirty back of the Acadia and soot in tailpipes has been discussed here before.

http://www.acadiaforum.net/forum/index.php?topic=2673.msg34082#msg34082
http://www.acadiaforum.net/forum/index.php?topic=2753.0
http://www.acadiaforum.net/forum/index.php?topic=5466.0
Hi Bonk,
Yes I know the soot issue has been brought up before. I wanted to have a poll just to see how many people are see this. As far as the dirt on the rear of the vehicle yes because of the design the hatch gets dirty but I am seeing the soot on the hatch now. It is get blown up while driving.(little black powder type dots) It come right off with a wash. This is the first vehicle I had that ever did this.

Bobby
 

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Re: Black soot/residue at exhaust tips and rear of vehicle

No soot on the back hatch and only tiny amounts in the exhuast tips for mine. Most of my wife's trips are less than 5 miles too.
 

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Re: Black soot/residue at exhaust tips and rear of vehicle

black soot = engine getting lugged down and not burning fuel efficiently.

No properly tuned internal combustion engine should exhibit sooty residue - this includes gasoline engines, diesel engines, jet engines, liquid fuel rocket motors and the like. Most of the time, soot and smoke arise from a poorly balanced fuel/oxygen ratio. This balance normally gets upset during acceleration and long pulls where extra power is needed. If it happens at cruise, something generally needs adjusted, cleaned or replaced, i.e. carb jets, fuel injectors, spark plugs, computer programs, engineering staff, EPA officials, the govenment in general, etc.
:angel:
 
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