TwinTurbo.NET: Nissan 300ZX forum - YOU WILL NOT BELIEVE THIS!(If you have bad gas mileage read)
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Subject YOU WILL NOT BELIEVE THIS!(If you have bad gas mileage read)
     
Posted by james-lee on March 03, 2001 at 12:52 AM
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Message It takes me an average 93 miles (one way) to get to work. According to my gas gauge thats a 1/4 tank each trip, half a tank in one day. Well check this out. Everytime I kept filling my tank up again it would fill up at 12 gallons. So yesterday as I left work I was on E so I said S"crew it!" I'll just drive till I run out of gas. I was thinking I still had 6.5 gallons left in the tank if the book is accurate. Sure enought I got back home (still reading E) and I filled up. This time I had filled up with 16.5 gallons. I never reset my ODO and it read (from zero and the last time I filled up) 432 miles!!!! Thats 26 miles per gallon on the freeway doing 70 - 75 mph!!! My car runs strong so I don't belive I am running lean. I guess it pays to just change everything you can think of. I am just worried about the gas gauge, I had the issue before and I thought I quashed it but with yesterdays recent discovery I guess not. If any of you guys are having any bad gas mileage here is a list of what I had done to my car to try and fix it:

3 Months Ago:
Air Filters
Fuel Filter
Fuel Dampners
Spark plugs
PCV & corresponding hoses
O2 Sensors

A month or Two Ago:
Timing Belt
Timing tensioner
Timing Pullies x 3
Adjusted Timing
Water Pump (doesn't really apply)
Thermostat (doesn't really apply)
ECU and Engine Temp Sensors
Lowered Idle a few hundred more
Tightened ALL fuel lines
Used gunk engine flush
Cleaned throttle bodies.

Hope any of you guys will benefit from this. I know how it feels to get bad gas mileage. And if none of the aforementioned above actually fixed my issue then I have no clue what did. Take care and good luck!


James-Lee

     
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