MikTip

Anyone elses V6 here suffer from carbon problems?

Žob

I do know the 30v V6 and 1.8 engine both suffer from carbon issues. There was a TSB out about it

Seattle Scott

idled too much, like 5 hours a night on the fishing boat.

Wouldn't you need to take the engine down to really tell? I guess peeking in the intake manifold would give you a real good clue.

MikTip

Ask Muhammad how he tells their is excess carbon in his engine causing problems?

Seattle Scott

He thinks the standard additive packages (what is already in good gas) and good driving, i.e. getting the car up to temp should take care of any problems so my original thought comes to mind but he doesn't have a 12v Audi engine either.

If there is a carbon problem with these engines there must be a serious design flaw in the engine where the combustion isn't generally hot enough. Maybe stop and go traffic is the biggest contributor to the problem.

I've seen terrible carbon deposits (on the old fishboats Chevy 427 but that engine idled about 5 hours day). Black, hard carbon about 1/8 inch thick. If one can of 44 can be mixed with gas, sprayed on the carbon via the injector and makes the carbon go away that's got to be pretty powerful stuff.

That could explain how cars that have carbon buildup and use 44 stop running. Or does it? Big hunks of carbon must be knocked loose that prevent any fuel/air from getting into the pistons? Or some massive carbon sludge that looks like tar? That sounds pretty grim. I can't imagine how else you could stop an engine with carbon.

It would be great if you could boroscope the engine before and after to see the effects. It could be really interesting to see some pictures of engines being torn down also to see the deposits.

I'd like to have a hunk of carbon and drop it in a small container of 44 or put a drop of 44 on it to see what happened.

Whatever you do your a bold pioneer Muhammad, blazing a trail for us to follow, or run away from. ;-)

Let us know what happens.

Muhammad

Based on my experience and the knowledge of some fairly seasoned mechanics, I don't think it's incorrect to say the 12v V6 has issues with carbon buildup. If yours doesn't have a trace of carbon then great, but don't take it as a mission to prove me wrong, and make a point of ignoring this fact as I've presented it... If you want me to tear down my engine to prove to you it's got some carbon buildup, then sorry, that's not going to happen. Somehow I don't think that would accomplish anything, anyway.

CoupeFNG

I have had multi valve VWs and have used 44K. It works wonders. Adding it to the tank is not the most effective way of using it. To use it effectively you need the accompanying kit. The kit allows you to add it directly into the intake tube while at half to full throttle. I just picked up a 90 Coupe two days ago and plan to take a closer look at the set-up. While I am a FNG on the Audi side I believe that I have a wealth of knowlege to share. 44K WORKS.