1995 Lexus ls400
I recently tuned up my 95 LS400. New wires, plugs, timing belt, waterpump...
Starts and runs like a kitten! However, my gas mileage has gone way down.
I'm at a half of a tank and only 128 miles. No error codes either. Any ideas?
Your gas gauge might be giving a false reading. You should actually measure the fuel you are using at the gas pump. Also, the recent cold spell will make mpg drop quickly. Are you using remote start a lot more now? Have the fuel pressure tested. Too high will increase consumption. In some areas they are dumping a lot of alcohol in our gasoline, which has much less energy than "real" gasoline. Just a few ideas.
Toyota 1UZFE engine. Confirm the timing is not off (retarded) by one tooth! It will run sluggish and burn more fuel! Check the engine vacuum 19-21
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