I'm trying to find out the best way to clean the corbon build up off the bottom of the valve and the top of the piston I have been told that he can cause problems if the corbon build up becomes to bad

 

Well, the BEST way is to remove the intake manifold and shell blast the carbon off.

The most common is Sea-Foam fed through a vacuum port on the intake. Much easier by comparison.

Keep an eye on my Installing a catch can thread. We're working on a solution to help remove the oil vapor from the intake and air supply.

 

SeaFoam.

 

There are better products than SeaFoam for cleaning GDI systems. BG44K is a good one, CRC intake cleaner, Amsoil Power Foam and even GTP (Guaranteed to pass) are more specific for GDI. SeaFoam is 50% pale oil, 30% petroleum naphtha, 10% isopropyl alcohol, and 10% water. its basically diluted lacquer thinner. Good for old school cars but not for EFI or GDI. Just my opinion.

 

Sorry I missed your post until now, Cody. What you seem to be talking about is carbon inside the combustion chamber. The best way to remove it is to pull the head off, quite a job. The only other alternative is like these guys are saying, chemical cleaning. It's not very effective at all, and would probably take many, many times to have any kind of noticeable result.

I'm guessing you really meant cleaning the intake valves and ports, and like Dbeluscak mentioned, shell blasting is a good option. I've posted a how-to here. You've probably already seen it by now.

You've got roughly 80,000 miles by now, so chemical cleaning alone is not going to cut it, you're going to need to shell blast. And set your SS up with catch cans like Dbeluscak also mentioned.