Direct Injection Cleaning Kits

Bush Pilot · 01-20-2025, 08:45 PM

Does anyone have experience with the cleaning kits that claim to help clean the intake valve area on our N54 engine?

E93Dude · 01-21-2025, 07:30 PM

Are you talking about the spray-on cleaner solvents? Or are you talking about walnut blasting. Either way, you are taking the fuel rails and the intake manifold off. This is not a "quick" job.

The spray-on solvent does dissolve the crud in the intakes, but you will still have to vacuum or suck the slurry out, and probably do some scraping with dental tools or similar. Its a mess, and uses lots of paper towels. Walnut blasting, if you have access to a compressor, is by far the cleanest, most thorough method, hands down.

01-20-2025, 08:45 PM	#1
Bush Pilot Private 28 Rep 101 Posts Drives: 08 BMW 335i Coupe, 04 BMW 325i Join Date: Dec 2021 Location: Tucson Arizona iTrader: (0)	Direct Injection Cleaning Kits Does anyone have experience with the cleaning kits that claim to help clean the intake valve area on our N54 engine?
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01-21-2025, 07:30 PM	#2
E93Dude Lieutenant 419 Rep 470 Posts Drives: 2007 E93 MT6 Join Date: Sep 2018 Location: The Old Dominion iTrader: (0) Garage List 2007 BMW E93 [0.00]	Are you talking about the spray-on cleaner solvents? Or are you talking about walnut blasting. Either way, you are taking the fuel rails and the intake manifold off. This is not a "quick" job. The spray-on solvent does dissolve the crud in the intakes, but you will still have to vacuum or suck the slurry out, and probably do some scraping with dental tools or similar. Its a mess, and uses lots of paper towels. Walnut blasting, if you have access to a compressor, is by far the cleanest, most thorough method, hands down. __________________ BMW: Doing Amazing(ly cheap) Things With Plastic (crap) Since the E90...
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