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Discussion Starter · #1 ·
What has everybody been doing about the maintenance of their GDI fuel systems? Any products anybody recommends or has had poor results with? I don't know how regularly it was done on my Accord before I bought it but I'm looking to keep up with everything. I've got my own ideas of products/companies I trust and avoid as I've been in the auto industry for a while now. Just curious to get some real world experiences from everybody here.
 

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They are all pretty good, but make sure you do the proper/whole service(suckin into fuel system ect). BG, LiquidMoly, Seafoam, and a few others out there. BG sells a full kit I like. They all may still needed some valve scraping if you want them fully clean. I would also put some in your fuel tank a few days before get is circulating and start working. Get a set of picks and brushes if your going to scrape. Because of the way DI is designed they will never get fully clean without scraping(unless they are using a secondary set of injectors). Oh yeah and its going to throw a tiny bit of extra smoke out of the exhaust ;)

Edit: Never used seafoam on a DI engine though. Think the only thing I used on DI was the BG products. First time all i did was have some cans of valve/intake cleaner and brushes and picks and removed the manifold. This was back 08/09 when we were first learning about all these .
 

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Discussion Starter · #3 ·
We usually use BG at the shop here and I'm partial to their stuff. I figured I'd likely go that route, but I like to get input from others. Always curious to hear what has and hasn't worked on our cars.
 

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We usually use BG at the shop here and I'm partial to their stuff. I figured I'd likely go that route, but I like to get input from others. Always curious to hear what has and hasn't worked on our cars.
edited above post. Never did it on a Honda but cant be that much different than a VW/Audi, or any other 2.0t for that matter.

Edit: Actually another big reason i went with the hybrid. Was tired of dealing with maintenance on DI/turbo cars.
 

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Discussion Starter · #5 ·
edited above post. Never did it on a Honda but cant be that much different than a VW/Audi, or any other 2.0t for that matter.

Edit: Actually another big reason i went with the hybrid. Was tired of dealing with maintenance on DI/turbo cars.
I can understand why. I wouldn't imagine it would be incredibly different but sometimes different cars take differently to the same things.
 

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Would an additive such as Seafoam actually be of benefit on a direct injection engine? They way I understand how they work is the fuel is injected under the valve (see attachment) and wouldn't help remove the carbon off the top of the valve.
 

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Would an additive such as Seafoam actually be of benefit on a direct injection engine? They way I understand how they work is the fuel is injected under the valve (see attachment) and wouldn't help remove the carbon off the top of the valve.
This is what I allude to in my first response and reason I say only way to fully clean di engine is to scrape the valves.
 

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This is what I allude to in my first response and reason I say only way to fully clean di engine is to scrape the valves.
Ok, thanks... that's what I thought, and part of the reason for my clarification was the post below.
Curious... why so?
Just wanted to make sure I understood.
 

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Discussion Starter · #12 ·
I believe they make separate products such as fuel additive (added to the gas tank - to help clean the injectors) and aerosol spray (into the air intake - to help clean the valves, particularly the tops of the intake valves).
Yes they do. That is exactly why I'm curious what products and/or methods people are actually using/performing.
 

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Discussion Starter · #14 ·
Bump I’m curious too didn’t want to start a new thread
I personally ran a BG induction kit through mine. We have their fogging machine that runs it through the intake then a can of their 44K through the tank. Didn't take anything apart and scrape the valves but it cleaned some carbon out and the butt dyno says things run a little better now.
 

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I personally ran a BG induction kit through mine. We have their fogging machine that runs it through the intake then a can of their 44K through the tank. Didn't take anything apart and scrape the valves but it cleaned some carbon out and the butt dyno says things run a little better now.
Hello sir and good morning! Do you have any recommendations on a location that can do it?
 

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Hello sir and good morning! Do you have any recommendations on a location that can do it?
Heres a start
 

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Guys, can you give your thoughts on 3c intelligent induction cleaner. Do you think this is a more effective method to cleanup carbon build for direct injection engines? I just hit 50k and am wondering if I could go perform this….
 

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Discussion Starter · #18 ·
Guys, can you give your thoughts on 3c intelligent induction cleaner. Do you think this is a more effective method to cleanup carbon build for direct injection engines? I just hit 50k and am wondering if I could go perform this….
I haven't heard of this one. I'd have to check it out. You won't get anything more effective than some good cleaners and physically scraping the valves but I ran the BG kit and it burned a fair amount of carbon and made the throttle response feel a little better.
 
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