Removing direct injection carbon deposits with chemicals rather than walnut blasting?
Published on 04-28-2019 09:33 PM
BoostAddict is seeing more and more posts about chemical direct injection fuel system cleaning solutions. Color this website skeptical but over the years some pretty bad carbon build up (
namely in Audi 4.2 FSI and BMW N54 motors) was posted and it took a direct physical solution to clean off the carbon deposits.
BG Products is known for various automotive cleaning chemicals and they state they have a two part gasoline direct injection cleaning solution.

Originally Posted by
BG Products
BG Gasoline Direct Injection Cleaner is a two-part cleaning process formulated to soften and disperse baked-on deposits that accumulate on intake valves of direct injected engines.
Direct injection engine deposits create a unique problem. Because the deposits form on the injector tip, the spray pattern becomes deformed. This causes fuel to ignite prematurely, producing a pinging and knocking. Left unchecked, these deposits begin to form on intake valves as well, dealing a serious blow to fuel economy and vehicle performance.
BG Gasoline Direct Injection Cleaner dissolves hardened fuel deposits that accumulate on injector tips and intake valves. Installed by a professional, it restores lost engine performance and fuel economy.
Is this really a replacement for good old fashioned walnut blasting? It certainly sounds easier to just pour in some cleaner but it is hard to believe it would work better or even anywhere near as good as physical removal.
The company posts some amazing before/after photos of their products at work:
They also certainly have a nice selection of cleaning products.
BoostAddict would like to see proof their product works for direct injection fuel systems.
This carbon is so hard to clean up, car care specialists are resorting to engine teardown and media blasting. Imagine a pressure washer blasting an ammunition of plastic or glass beads, aluminum oxide, or ground-up walnut shells.⠀
......⠀
What. A. Mess. ⠀
......⠀
The new BG Platinum™ Fuel System Service cleans gasoline direct injection systems so well, there’s no need for media blasting. ⠀
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You can save those walnuts for your Thanksgiving dinner.⠀
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