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Just used a new ultrasonic injector cleaner on a 6.7 Powerstroke and it came out looking worse than when it went in.
Followed the manual's 30-minute cycle with their branded solution, but now the spray pattern is all over the place, so has anyone else had this happen and know a better cleaning method?
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casey_campbell4mo ago
Had this same thing happen with a set of injectors on my buddy's Cummins. Ran them through a 45 minute ultrasonic cycle and they came out with this weird film and a nasty spray pattern. What finally worked was doing a short 10 minute cycle first with just warm water and a splash of simple green to get the loose stuff off, then switching to a proper injector cleaner solution for the full 30 minutes. Made sure to blow them out with compressed air real good between cycles too. The manual's recommended one-and-done approach didn't cut it for mine either. Might be worth trying a two-stage soak, your mileage may vary but it saved me from buying new injectors.
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tyler8225mo ago
That "worse than when it went in" look might just be all the gunk finally breaking loose.
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the_thea5mo ago
My old Honda Civic's oil looked like chocolate milk for the first two changes after I bought it. Honestly thought I'd ruined the engine, but it cleared up by the third time. It was just years of sludge working its way out.
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