How clean does your engine burn?Post tailpipe pic!
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OVERKILL
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Expedition is clean as a whistle:
My wife's Charger too. The SRT-8? Not so much. It soots like a boss, just like the M5 did due to the rich tune.
My wife's Charger too. The SRT-8? Not so much. It soots like a boss, just like the M5 did due to the rich tune.
That's a great idea actually. All the service writers need are some of those Harbor Freight "digital inspection cameras" and they will be selling fuel induction services all day.
Originally Posted By: 01rangerxl
Originally Posted By: Ramblejam
I'm not so sure about that...
Here's my Suburban. Other than road grime/dirt at the end of the pipe, it's bare metal with no black residue on your finger.
Off topic, but are those General Grabber AT2 tires? How do you like them?
Very clean exhaust.
My 4.0 Ranger, like other 4.0s I have seen, has a very clean tailpipe with no soot at all. My 3.0 Ranger, like other 3.0s I have seen, has a dark, sooty tailpipe. Go figure.
BFGoodrich Rugged Trail T/A in LT245/70R17/E
Originally Posted By: Ramblejam
I'm not so sure about that...
Here's my Suburban. Other than road grime/dirt at the end of the pipe, it's bare metal with no black residue on your finger.
Off topic, but are those General Grabber AT2 tires? How do you like them?
Very clean exhaust.
My 4.0 Ranger, like other 4.0s I have seen, has a very clean tailpipe with no soot at all. My 3.0 Ranger, like other 3.0s I have seen, has a dark, sooty tailpipe. Go figure.
BFGoodrich Rugged Trail T/A in LT245/70R17/E
The parents' Focuscape soots up its tailpipe but it is DI. I believe the greenies are trying to push particulate filters on gasoline Direct Injection engines now!
My two vehicles have clean tailpipes. I can grab a picture later.
My two vehicles have clean tailpipes. I can grab a picture later.
Originally Posted By: GMFan
Someone should let the car dealerships in on this idea... they can call it exhaust colonoscopy. The preparatory flushing (of your wallet) however would be after the service is performed rather than before.
LOL, I posted mine to show for most part pipe color really isn't relevant, my old f150 looks far better than much of the newer stuff posted...
Someone should let the car dealerships in on this idea... they can call it exhaust colonoscopy. The preparatory flushing (of your wallet) however would be after the service is performed rather than before.
LOL, I posted mine to show for most part pipe color really isn't relevant, my old f150 looks far better than much of the newer stuff posted...
I will have to check mine for cleanliness, I know it doesn't smoke or burn oil or run with any issues, so.
Originally Posted By: dlundblad
Dang. All these photos make my Jeep look like a dirty diesel.
Same.
Dang. All these photos make my Jeep look like a dirty diesel.
Same.
JTK
$100 Site Donor 2025
Sounds silly, but I'd still be curious to see some correlation between gasoline usage and 'tail pipe cleanliness'.
On a normal, healthy running gasoline engine, I'm thinking the fuel miser 4cyls are going to have sootier tailpipes then much more fuel thirsty vehicles. Again.. due to less water vapor to wash it out. Less fuel, less water vapor emitted.
Fuel hogs are still spewing particulate. It's just getting steam-cleaned out and away.
On a normal, healthy running gasoline engine, I'm thinking the fuel miser 4cyls are going to have sootier tailpipes then much more fuel thirsty vehicles. Again.. due to less water vapor to wash it out. Less fuel, less water vapor emitted.
Fuel hogs are still spewing particulate. It's just getting steam-cleaned out and away.
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Originally Posted By: JTK
Sounds silly, but I'd still be curious to see some correlation between gasoline usage and 'tail pipe cleanliness'.
No it's not silly. I'm sure that if your tailpipe is extremely dirty with carbon buildup then that may well correlate to an engine issue, but in the great in-between I can't see how it does. I would think it has more to do with exhaust gas velocity and exit temperature (for an engine not throwing any codes) than anything else.
Sounds silly, but I'd still be curious to see some correlation between gasoline usage and 'tail pipe cleanliness'.
No it's not silly. I'm sure that if your tailpipe is extremely dirty with carbon buildup then that may well correlate to an engine issue, but in the great in-between I can't see how it does. I would think it has more to do with exhaust gas velocity and exit temperature (for an engine not throwing any codes) than anything else.
Originally Posted By: JTK
Sounds silly, but I'd still be curious to see some correlation between gasoline usage and 'tail pipe cleanliness'.
On a normal, healthy running gasoline engine, I'm thinking the fuel miser 4cyls are going to have sootier tailpipes then much more fuel thirsty vehicles. Again.. due to less water vapor to wash it out. Less fuel, less water vapor emitted.
Fuel hogs are still spewing particulate. It's just getting steam-cleaned out and away.
Doesn't seem to be the case with my Jeep. It takes a tailwind on the highway to break 20 mpg, but it's never been able to keep the tailpipe clean. Then again, the pipe is also much larger than on a small 4 cylinder, so the exit velocity is probably no faster.
Heck, if I took a picture of my exhaust tip and the one from a friend's newer TDI, you'd assume mine was the diesel (sooty, while the TDI's tip is perfectly clean).
Sounds silly, but I'd still be curious to see some correlation between gasoline usage and 'tail pipe cleanliness'.
On a normal, healthy running gasoline engine, I'm thinking the fuel miser 4cyls are going to have sootier tailpipes then much more fuel thirsty vehicles. Again.. due to less water vapor to wash it out. Less fuel, less water vapor emitted.
Fuel hogs are still spewing particulate. It's just getting steam-cleaned out and away.
Doesn't seem to be the case with my Jeep. It takes a tailwind on the highway to break 20 mpg, but it's never been able to keep the tailpipe clean. Then again, the pipe is also much larger than on a small 4 cylinder, so the exit velocity is probably no faster.
Heck, if I took a picture of my exhaust tip and the one from a friend's newer TDI, you'd assume mine was the diesel (sooty, while the TDI's tip is perfectly clean).
Originally Posted By: camrydriver111
Interesting thread! lol
indeed!
who knew pictures of rear ends were the new BITOG porn?
but seriously, recently i saw a sludged engine with clean exhaust pipe. i think this is all about cat converter.
Interesting thread! lol
indeed!
who knew pictures of rear ends were the new BITOG porn?
but seriously, recently i saw a sludged engine with clean exhaust pipe. i think this is all about cat converter.
OVERKILL
$100 Site Donor 2021
Originally Posted By: JTK
Sounds silly, but I'd still be curious to see some correlation between gasoline usage and 'tail pipe cleanliness'.
On a normal, healthy running gasoline engine, I'm thinking the fuel miser 4cyls are going to have sootier tailpipes then much more fuel thirsty vehicles. Again.. due to less water vapor to wash it out. Less fuel, less water vapor emitted.
Fuel hogs are still spewing particulate. It's just getting steam-cleaned out and away.
The 6.4L V8 in my SRT-8 soots up the tailpipes like crazy. The 5.7L V8 in my wife's Charger keeps the tailpipes immaculate. The main difference is a richer performance tune on the SRT-8. This was the same for my M5, which also sooted up like a boss.
Sounds silly, but I'd still be curious to see some correlation between gasoline usage and 'tail pipe cleanliness'.
On a normal, healthy running gasoline engine, I'm thinking the fuel miser 4cyls are going to have sootier tailpipes then much more fuel thirsty vehicles. Again.. due to less water vapor to wash it out. Less fuel, less water vapor emitted.
Fuel hogs are still spewing particulate. It's just getting steam-cleaned out and away.
The 6.4L V8 in my SRT-8 soots up the tailpipes like crazy. The 5.7L V8 in my wife's Charger keeps the tailpipes immaculate. The main difference is a richer performance tune on the SRT-8. This was the same for my M5, which also sooted up like a boss.
Originally Posted By: friendly_jacek
Originally Posted By: camrydriver111
Interesting thread! lol
indeed!
who knew pictures of rear ends were the new BITOG porn?
but seriously, recently i saw a sludged engine with clean exhaust pipe. i think this is all about cat converter.
Yeah fj, and my thread from a few years ago asking to see everyone's foot pedal trio got shot down. I was persecuted.
Originally Posted By: camrydriver111
Interesting thread! lol
indeed!
who knew pictures of rear ends were the new BITOG porn?
but seriously, recently i saw a sludged engine with clean exhaust pipe. i think this is all about cat converter.
Yeah fj, and my thread from a few years ago asking to see everyone's foot pedal trio got shot down. I was persecuted.
It's clean.
My engine must be good.
My engine must be good.
This is interesting .... Silly, but interesting.
My expedition with 146k is clean
My work truck (2010 f150 5.4) with 56k is clean, but has also burned copious amounts of ethanol
My 83 is spotless, but the exhaust is only a few years old. But it is a carbureted pig that idles a lot and rarely sees the road. No cats either.
Same with the 79. 460 carbureted pig, idles, no cats and rarely sees the road.
I'll have to check the cars ....
Particularly the old 94 escort. Tons of miles, original muffler, but the last 100k was with a tube header sans cat.
Interesting theories.
My expedition with 146k is clean
My work truck (2010 f150 5.4) with 56k is clean, but has also burned copious amounts of ethanol
My 83 is spotless, but the exhaust is only a few years old. But it is a carbureted pig that idles a lot and rarely sees the road. No cats either.
Same with the 79. 460 carbureted pig, idles, no cats and rarely sees the road.
I'll have to check the cars ....
Particularly the old 94 escort. Tons of miles, original muffler, but the last 100k was with a tube header sans cat.
Interesting theories.
My 13-year-old BMW...
Tailpipe pics, huh? Bizarre auto porn I guess.
I apologize, I own an electric car and can't. Sorry, no auto-eroticism here.
Seriously though, modern gasoline Direct Injection engines do create a lot of black soot for the tailpipe and it gets in the oil to foul it. http://www.sciencedirect.com/science/article/pii/S0301679X15000432
I apologize, I own an electric car and can't. Sorry, no auto-eroticism here.
Seriously though, modern gasoline Direct Injection engines do create a lot of black soot for the tailpipe and it gets in the oil to foul it. http://www.sciencedirect.com/science/article/pii/S0301679X15000432
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