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My 84z non turbo only gets about 15 mile / gal. anyone have any ideals on what I can do to improve this?
 

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Start with a full tune up. No way should a 300zx being getting 15mpg. While doing the tune up also check for vac leaks, corrosion of electrical connections, etc. Chances are if you do the full tune up and inspection of your car you'll not only solve your gas mileage issue but other issues you probably didn't know you had either.
 

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2nd.
 

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Ways to save some gas costs with your Z....(tested with an 87 na)



* new plugs...wires...dist cap & rotor.

* advanced igntion????

* check gas cap to see if it holds pressure...check EVAP system (charcoal can & lines)...my Z gets better mpg thru the first 3-4 gallons..running on vapor?

* use synthetic oils in the engine...trans...diff...maybe 3% gain in mileage?

* new O2 sensor (if the old one isn't up to snuff)...possible 10-12% gain in mileage...found this out by replacing it.

* a non functioning EGR might cost you 10% in mileage...found this out by disabling mine.

* tire pressure up to max (be SURE and check for good traction)....maybe a 3-5% gain?

* drive like your grandma.....

* for those with a sense of adventure....

http://peswiki.com/index.php/Directory:Acetone_as_a_Fuel_Additive ...have gained 12% in mpg with an na using acetone

http://www.smartcar-owner.co.uk/Low Cost Magnetic Fuel Saver.htm ...use 3 of these after filter?

http://patft.uspto.gov/netahtml/srchnum.htm .... paste in 5,124,045 and hit SEARCH ...info specific to the 300ZX

http://somender-singh.com/

* for those from outer space.....

http://www.kfor.com/Global/story.asp?S=3390503&nav=6uy5aHLq

http://quantumgravitics.tripod.com/id3.html
 

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1. release foot from floor lol..

um i believe if the ECT isnt operating properly it thinks the engine is too hot and injects more fuel to cool the operating temperatures more....thus...bad gas..just something else to check besides the list fakina made
 
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