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Old 06-10-2015, 05:13 PM   #6 (permalink)
92civicvx
EcoModding Lurker
 
Join Date: Oct 2013
Location: Milwaukee
Posts: 50

Panda - '92 Honda Civic VX
90 day: 53.55 mpg (US)

Charles II - '05 Honda Accord EX-L
90 day: 27.6 mpg (US)

Fitrari - '07 Honda Fit Sport
90 day: 36.4 mpg (US)
Thanks: 36
Thanked 13 Times in 11 Posts
I ran into the same issue with my VX, ended up being valve lash too tight and o2 sensor were bad. I still have a very minor hicub every so often when in lean burn. Betting its something fuel related but got over 60mpg on my last tank so not chasing the problem till it get worse. Is your fuel pressure regulator working properly? Wouldn't hurt to replace the fuel filter either.
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