E85 - 13:1 (gasoline AFR) - ACK!
#31
EvoM Guru
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According to Autocenter.net MITSU does sell the fuel filter separately for $4.93. It is item #20 on the attached diagram. Has anyone actually bought this filter and proven that it can't be replaced?
I think $107.04 for a new fuel filter by buying the entire assembly seems pretty extreme.
MrFred did you change your fuel filter yet? If so, did it affect your AFRs?
I think $107.04 for a new fuel filter by buying the entire assembly seems pretty extreme.
MrFred did you change your fuel filter yet? If so, did it affect your AFRs?
#40
I finally have the info that I need to revisit this thread. Back in December when I noticed the AFRs had gone one point leaner, a dirty fuel filter seemed like an obvious reason, but in the back of my mind, I have been wondering whether it might be something else such as E85 not atomizing well in cold weather or perhaps a batch of fuel that was closer to E95.
To fix the 13:1 lean condition back in December, I just richened up the fuel table by 1 pt. That brought the AFRs down to ~11.5:1-12:1. I just got another set of logs this morning with the exact same "richened" tune in the exact same air temps, and the AFRs are right at 11.0:1, so it seems that for whatever reason, my E85 supplier made a batch of fuel in December that was very high in ethanol content. Makes me wish I would have hooked up my E85 gauge long ago (its on the slate for this week or next week).
To fix the 13:1 lean condition back in December, I just richened up the fuel table by 1 pt. That brought the AFRs down to ~11.5:1-12:1. I just got another set of logs this morning with the exact same "richened" tune in the exact same air temps, and the AFRs are right at 11.0:1, so it seems that for whatever reason, my E85 supplier made a batch of fuel in December that was very high in ethanol content. Makes me wish I would have hooked up my E85 gauge long ago (its on the slate for this week or next week).
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