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Ok. Thank you all for suggestions. I have checked timing, it is in perfect place. And yes, piston rings and everything was new. I know 30mpg is in specs, but that is what I get when short shifting, never accelerating hard, and not going very fast, moving in neutral whenever possible (down hill). And my max has been 30mpg with a tank. I will check on how to start a fuel log like you all say. And I am looking to buy an arduino to build a mpguino. It just is frustrating that a friend of mine that drives like crazy, hard accelerating, and in a less fuel efficient car gets better mileage than me. With my driving tequniques I should be getting at least a little over 30mpg (which is the stock mileage for this car). Like this week I got 28mpg. Without going downtown (where there are stop signs and lights).
The only thing I would not like to do is turn off car at red light. Its only 30 seconds of idling and like I had mentioned, it goes into some kind of mode where almost no gas is being burnt in idle after a couple seconds. It might not be what you call lean burn mode, but it is definitely lean. (veryfied by getting only .1v off of oxygen sensor when in idle, and it does work since once I move the accelerator it goes up). Plus the starter will end up costing more to replace, than the fuel saved.
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