I recently bought a 5spd non turbo 300zx and I'm getting really bad gas mileage. I know that the 300zx isn't known for its fuel economy, but this is crazy. I'm getting about 13 in town and 18 on highways. Would someone let me know how their gas mileage is. Thanks dave (sirdave4@hotmail.com)
Does anybody know how to run the diag on the car (ODBE). Thanks Dave.
I had the same problem when I first bought mine, however when I replaced the exhaust system (full cat-back) it helped a bit. I was also told that replacing the spark plugs/wires and getting a fuel system cleaning would help, as they are old cars.
I have a 1991 300ZX TT and get around 15 mpg in town and up to 22 mpg on the highway when I drive it extremely conservatively. When I'm rodding it around it slips to 12 mpg and 16mpg. The 300ZX TT is a step below an all out racecar. It was designed for performance, not an economical commute.
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