intake runner totally clean???

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11-12-2006, 10:47 PM

sr71bbjr

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intake runner totally clean???

All of the runners on my dads 408 afr headed motor are dirty except #7..It's totally clean.Any ideas??I'm taking the injectors to get flow tested and cleaned..

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11-13-2006, 04:18 PM

NHRATA01

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I'm thinking maybe an injector was leaking/not closing completely. Usually the runners get a mix of oil/carbon. Gasoline is an excellent solvent and cleaner, so if that was the case it would make sense that runner is clean.

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11-13-2006, 04:49 PM

MeentSS02

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Hmmmmm...let us know what you find out. After doing an injector swap this weekend, I too found one of my runners cleaner than the others. I've also been getting worse fuel economy lately...we'll see what happens. Not getting my old injectors checked though...