Filthy Stuff

[DonB]

Careful cleaning them (2012s), there is a VERY sharp edge on the chrome about an inch inside the tailpipe

 

[algeeee]

Just under 5K miles and 3.8 Genny has soot blackened tail pipes. Had it in to dealer, they "all do that" was the reply. Soot is the product of incomplete combustion and I can't believe it is normal. What is that soot doing to the catalytic converters? Does anybody know how to contact Hyundai engineering?

 

[Glashub]

Oh man...I wonder if it has to do with the GDI. There are stories about direct injection carbon build up. If the carbon on your tail pipes is a by-product of GDI, and I'm not saying it is, keep your eyes open at around 15k for any loss of power. Google "direct injection problems" and similar keywords to learn more. Not major but good to be aware of imo.

 

[newman]

on my 2012 black It is not as bad due to the placement of the exhaust pipes being integrated into the bumper. normal washing should keep it under control. Many may not know this until they try it but using 0000 steel wool with soap and water will make them look brand new again..you can buy it at Lowes or local hardware store but be sure to get the 0000, it is very fine and will not scratch the metal. I also used it on my chrome wheels to remove brake dust and water spots and has never scratched. hope this helps

I second this advice. I pre-soaked the exhaust trim with diluted de-greaser and then it was very easy to clean with 0000 steel wool. Cheap and fast.

Cheers,
Newman

 

[Ruissimo]

Careful cleaning them (2012s), there is a VERY sharp edge on the chrome about an inch inside the tailpipe

THIS!

Luckily, I was wearing gloves the first time I cleaned them...

 

[scottdk]

I second this advice. I pre-soaked the exhaust trim with diluted de-greaser and then it was very easy to clean with 0000 steel wool. Cheap and fast.

Cheers,
Newman

Mind sharing your source for this diluted de-greaser? The inside of my quad tips gets pretty dirty and tough to keep clean.

 

[newman]

Mind sharing your source for this diluted de-greaser? The inside of my quad tips gets pretty dirty and tough to keep clean.

Hey Scottdk -

I used a bicycle chain degreaer ( http://www.performancebike.com/bikes/Product_10052_10551_1030916_-1___400141 )

However, I have also used simple green in the past as well. Just remember that these are usually concentrated and therefore to dilute them at least as much as directed. I recommend diluting even more.

Cheers,
Newman

 

[Glashub]

My bad. I apologize. I have carbon on my tail pipes too. Never would've noticed it cuz its only on the inner part. You guys look down into tail pipes?

 

[OGenesis]

All cars will have some carbon build up in the exhaust. However, the richer the fuel mix, the more build up. GDI engines tend to run lean rather than rich because of the spray of fuel it delivers during combustion. But it is also said to cause more carbon build up internally on the pistons.
I hope this is not the case, as it would definitely shorten the engine life. Beyond the ability to get more power, I am curious to see the long term effect on these engines and why so many car makers are using GDI technology in their current builds.

 

[scottdk]

My bad. I apologize. I have carbon on my tail pipes too. Never would've noticed it cuz its only on the inner part. You guys look down into tail pipes?

The OEM tips are basically gun-metal grey/black, and dirt and everything else on them are difficult to notice vs my MSA exhaust tips that are stainless steel polished finish.

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[limey43]

I have 7000 miles now on my white 2012 3.8 and only yesterday after 1350 miles in two days returning from FL did I notice black soot around the tail pipes. It washes off easily with car shampoo. 30.4mpg for the trip.

 

[Vinnie]

On a related note, it appears the 5.0 engine fitted cars have a tendency to emit puff of smoke under hard acceleration (and in between shift changes). I have seen it on Equus and R-Spec (6 of those in total). In contrast, I did not observe similar puffs behind a Pontiac G8 GXP or a BMW 550 (all similar spec'd engines). I realize this does not make an objective or scientific observation but I did provide that feedback to Hyundai - I have not heard anything back. I am speculating this may be contributing to the usual amount of soot observed around the chrome exhaust tips. BTW, I do believe the R-spec soot deposit is unusually high (when I compare to other cars with chrome exhaust tips and similar mileage). Just my 2 cents.

 

[Slider]

I've just used a little bit of Sol-U-Mel on a paper towel and it comes off instantly with no residue and leaves the chrome shiny.

 

[scottdk]

By far the best metal cleaner/polish I have used as of yet in my 30 years of existance. Took me under 5 minutes to get my tips perfect. The inside of my tips were completely black and now are back to "bling". Outside perfect also. I've never used something that was so easy, I'm used to having to spend way to much time on these. This product goes on and just polishes off with a clean cloth.

http://www.detailedimage.com/Optimum-OPT-M36/Metal-Polish-P291/8-oz-S1/

 

[Jbo]

Mega,IRS wheel cleaner works well.

 

[dg_moore]

Speaking of solvents, this is the best I've ever seen. It removes just about anything, including solar film, dried latex paint, adhesives, etc., etc. without harming the underlying surface. I've used it for years and it's never failed:

[ame="http://www.amazon.com/Titan-Safety-Solvent-Cleaner-Spray/dp/B0009KKSX0/ref=sr_1_1?ie=UTF8&qid=1346943370&sr=8-1&keywords=Titan+oil-Flo"]Titan Oil Flo Safety Solvent Cleaner,16 oz Pump Spray : Amazon.com : Automotive[/ame]

 

[jnc2000]

Direct Injection = more carbon.... clean your cars folks. I drive at least 1K miles a week and still find time to hand wash with two buckets at least once a week - full details once a month.

 

[landtuna]

My son is in the Navy and when I told him how well it worked on exhaust tips he said the Navy uses something like it to clean the brass on ships.

We used Brasso in the "old" navy.

 

[Billfz1]

Direct Injection = more carbon.... clean your cars folks. I drive at least 1K miles a week and still find time to hand wash with two buckets at least once a week - full details once a month.

Direct injection does NOT equal more carbon. Because of better control of mixture direct injection results in more complete combustion, and less unburned fuel which causes carbon. The comments about buildup on valves have all been caused by various smog controls. Most notably exhaust gas recirculation. Be sure your cars is working properly. One of the likely culprits on black deposits, alcohol additives in fuel. Formaldahides and other byproducts cause discoloration. In racing cars and motorcycles aviation fuels are often used, which still have lead additives. These additives turn the exhaust pipes a thick brown or grey depending on what is used. The type of catalyst used will also change the final deposits. Just wash fairly often and it won't be a problem.

 

[sownman]

Dredging up this older thread because I went looking for some advice on this. I've got a 5.0 r spec in the pearl white that gets pretty grungy looking all around the pipe, sides, under and about 3 inches above. Looks shitty on the white bumper.

I've owned the car about 8 weeks and was thinking it might be a new engine thing that would go away but after 2400 miles and a switch to synthetic oil its just the same.

Any new info on this ? Seems an aftermarket pipe extension of an inch or so might help a lot, anybody hear of such a product ?

Steve