Hello jlk16188:
I'm finding myself in a similar spot as you were, whereas I've been averaging around 37mpg on my 94 Civic Vx, with over 233,000 miles on the engine. My goal is to also achieve the ever coveted 50mpg.
So far, I have done the following:
-Installed & indexed new OEM NKG spark plugs.
-Installed a new OEM wire set from Majestic Honda.
-Installed a new OEM fuel filter/Majestic Honda.
-installed a new OEM cap & rotor/Majestic Honda
-Installed a new air filter.
-Cleaned out the idle control valve (i.e. which fixed my hunting idle)
-Cleaned out the throttle body.
-Did an oil change with Amsoil 5w30 with Amsoil filter.
Soon enough, I plan on installing the new exhaust in addition the the new 5-wire OEM O2 sensor. Given your previous experiences, I'm hoping that you can make additional suggestions to achieve this goal...Thank You.
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