Use a bore scope before and after. It wont do anything. You are wasting your time and money. I have witnessed countless ones done and its snake oil. Catch can or walnut blasting are the only real ways to clean them.
I have a catch can myself, and it litterally takes 2 minutes to remove. Its held on by 2 bolts. It takes more time filling yhe gas tank....
Quote:
Originally Posted by Riker
@6spdhyperblue
I am going to take a picture of what I think you are referring to in my engine bay once I have time. I would definitely appreciate the confirmation/help!
@Whocares05050
The cleaner is specifically meant for direct injection. The fact there is no port injection of the fuel to run over the intake valves to clean them off means you need to clean them.
Some people do catch cans which I am not doing to avoid arguing with dealers/GM on warranty claims. Even if arbitration would force GM to prove the can caused a failure, it still means I would have to go through that whole mess.
I don't want to wait till the carbon build up is so bad that I get issues later and need a walnut blasting or other tear-down service.
So I am going with a regular cleaning with CRC GDI intake cleaner which has been used on tons of others DI-only engines and does combat the build up quite well.
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