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I thought those fuel system cleaners were just snake oil
Had a customer with a rough idle on their 2012 Civic, nothing else worked. A guy at the parts counter in Knoxville said to try a specific brand, Berryman B-12. I was ready to pull the injectors. Poured a can in the tank, drove it for a week, and the idle smoothed right out. I still don't push them on everyone, but for certain old carbon buildup issues, they actually work. What specific jobs have you guys seen where a cleaner actually fixed the problem?
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phoenix_thompson41mo agoMost Upvoted
Berryman B-12" fixed one car, but that's just a lucky band-aid.
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morganhill26d ago
averywilliams mentioned sticky lifters and that's actually closer to the real story than people realize. The thing nobody brings up is that those cleaners work best on cars that have been running the same cheap gas for years with short trips where the engine never fully warms up. I had a 2005 F-150 that would stumble on cold starts and a can of Techron in the tank for two fill-ups completely fixed it. The carbon buildup in those low temp conditions is different than what you get from normal driving. Phoenix_thompson4 called it a lucky band-aid but sometimes a band-aid is all you need if the real problem is just gunked up fuel injectors or valves that haven't been cleaned in 80,000 miles. Have any of you tried using it as a preventive thing before problems start?
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