What is this gunk in my fuel filter?
My onan diesel generator recently stopped running. I found that the fuel filter was clogged with some sort of reddish/brown gunk that looked like mud or dirt. I changed the filter and now the generato...
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Rust or sludge you got from a fill up. I had to change filters a dozen times before I got all the cr*p out from one really batch. Most pumps have filters these days so it's not as common.
