Audi's official answer to carbon build up

[ArthurPE]

I want to inspect/measure my valves...then run the system once, reinspect/measure, no cleaning (if required)
run it again, reinspect/measure
probably won't happen til spring
it is a very simple/safe concept...

if I sound evasive, I am
it's so simple I can't believe it hasn't been done (it may have been) curently having a patent search performed

I'd like to see the manual...how the system hooked up...if it's to the fuel rail, won't help the inlet valves...as someone said...will do the cylinder, piston, etc.

I am working on something to do this, there will be millions of cars, and mucho $$$ to be made...
I personally don't think deposits are an issue, but if people are willing to pay for 'scotchguard', permanent paint sealant and tranny flushes, why not make a few bucks?

it is non-corrosive, biodegradable, non-chemical/toxic and abundant
hook the system up, and drive around on the highway for an hour (or so)
should make it spotless....it will dissolve it slowly and in very small pieces, no chunks...may need 2 treatments for extreme cases
should not require an oil change afterwards

Hi Arthur... I thought you were working on something.
When can we get some and test it for you?

[caldy]

I think it's along the lines of this:

http://www.bgfindashop.com/bgservices/fuelair.htm

[Timster]

I want to inspect/measure my valves...then run the system once, reinspect/measure, no cleaning (if required)
run it again, reinspect/measure
probably won't happen til spring
it is a very simple/safe concept...

if I sound evasive, I am
it's so simple I can't believe it hasn't been done (it may have been) curently having a patent search performed

I'd like to see the manual...how the system hooked up...if it's to the fuel rail, won't help the inlet valves...as someone said...will do the cylinder, piston, etc.

I am working on something to do this, there will be millions of cars, and mucho $$$ to be made...
I personally don't think deposits are an issue, but if people are willing to pay for 'scotchguard', permanent paint sealant and tranny flushes, why not make a few bucks?

it is non-corrosive, biodegradable, non-chemical/toxic and abundant
hook the system up, and drive around on the highway for an hour (or so)
should make it spotless....it will dissolve it slowly and in very small pieces, no chunks...may need 2 treatments for extreme cases
should not require an oil change afterwards

Hi Arthur... I thought you were working on something.
When can we get some and test it for you?

Cool.... Come on, hurry up !

[adsgreen]

Be interesting to try the Wynn product - seems similar in principle to what Arthur is working on but most definately not environmentally friendly.
My only concern would be reaching all cylinders evenly

[ArthurPE]

Be interesting to try the Wynn product - seems similar in principle to what Arthur is working on but most definately not environmentally friendly.
My only concern would be reaching all cylinders evenly

I don't think equalized distribution will be an issue with a running engine...

my approach would be to run the car for an hour or more...
say you know you're taking a >1 hour trip...hook the device up until all 'product' is injested/consumed...

it may be able to use a product of combustion (recycled until the cycle is completed)...

[PetrolDave]

We're going over old ground here - the Wynn's products were first mentioned on here a couple of years ago and a few of us tried them.

I didn't find any difference between the before and after when using the Wynn's petrol additive and "a well known brand" of injector cleaner - same improvement in smoothness at all engine speeds and improvement in low end torque.

The aersol injected into the inlet manifold produced a cloud of smoke from the exhausts, but I can't say I noticed any difference at all in performance, engine running, etc.

[andre3k]

We're going over old ground here - the Wynn's products were first mentioned on here a couple of years ago and a few of us tried them.

I didn't find any difference between the before and after when using the Wynn's petrol additive and "a well known brand" of injector cleaner - same improvement in smoothness at all engine speeds and improvement in low end torque.

The aersol injected into the inlet manifold produced a cloud of smoke from the exhausts, but I can't say I noticed any difference at all in performance, engine running, etc.

I was about to say that. I remember reading one of those long threads on the subject.

Arthurs stuff hopefully can add something different to the discussion.

[madgreek]

We're going over old ground here - the Wynn's products were first mentioned on here a couple of years ago and a few of us tried them.

I didn't find any difference between the before and after when using the Wynn's petrol additive and "a well known brand" of injector cleaner - same improvement in smoothness at all engine speeds and improvement in low end torque.

The aersol injected into the inlet manifold produced a cloud of smoke from the exhausts, but I can't say I noticed any difference at all in performance, engine running, etc.

Audi Dealers here in the States have been doing this "induction cleaning" for years, it's good at cleaning minor buildup, but useless for thick buildup seen in our engines. Kind of a waste of money.

The only way to truly clean the deposits is removing the manifold and manually scrubbing everything, or Media Blasting. Which uses a high pressure spray of walnut shells or the such.

Check this recent victim of massive buildup.

http://forums.quattroworld.com/rs4b7/msgs/52391.phtml

[UKS4APR1]

Check this recent victim of massive buildup.

http://forums.quattroworld.com/rs4b7/msgs/52391.phtml

I notice Audi paid for this one under warranty

[pad125]

Let me know when someone has a solution and I wont have to spend thousands getting it cleaned again

If someone thinks they have a system to clean this effectively without taking the heads off then I'm in

[Ice_Coffee]

what mileage ?

[pad125]

44k

[sonny]

As some body once said one here "Dont get hung up on carbon"

[ArthurPE]

As some body once said one here "Dont get hung up on carbon"

ask P_G about his >70k mile uncleaned cars speed relative to the one with the valves posted above...both before and after cleaning the valves (plus the pistons, chamber, etc., new plugs, head gaskets, etc., plus it is 100 lbs lighter than P-G's avant)

[pad125]

With all due respect fella's, power is not the issue here (as much as we all love the kick in pants the RS4 gives us), the issue is restrictive inlet tract. Take your car to the MOT station and ask them to do an emissions test and see how close you are to the limit. I'm guessing its varied but a also a lot closer than is close for comfort. If my car is one off then thank the lord its all a lot of hot air about nothing but if its not be prepared for the worst.