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Old 07-22-2014, 05:30 AM   #53 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
Posts: 6,299

Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
90 day: 3671.43 mpg (US)
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Quote:
Originally Posted by Baltothewolf View Post
So I went and filled up tonight, 250 miles on the dot and 6.446 gallons used, for a total of 38.7MPG. I don't know how the hell I got such low mpg, but whatever. I think there is a problem somewhere, I'm gonna do a compression test sometime this week.
Maybe you didn't get such low MPG. Could be some pump variation in there. And that's a relatively smaller fill, so that could be some of the explanation. Do you go to the same pump at the same station each time? Always pick slowest fill rate? Always stop pumping at the first click? Do all that and fill at closer to empty 9 or 10 gallons used, and you'll reduce data noise and make it easier to figure out what's happening.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.



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