Jetta Gas Mileage.
I am by no means a car buff, and in terms of technical problems, I am usually stumped. Anyhow, my wife and I are having some problems with her 1996 Jetta right now. The gas mileage sucks. We noticed this a while ago and brought it into my mechanic (whom I trust) and he replaced a few things. He did the following:
Timing Belt Replaced
4 Spark Plugs Replaced
He figured that this should help the problem. It hasn't. We filled the tank up and have driven 150 kilometres and we've already burned a half a tank of gas with a small 4 cylinder engine.
Should I just bring it back to my mechanic, or does anyone have any recommendations? My father-in-law had mentioned something about getting some STP Fuel Injector Cleaner (I think?), and putting that in the car to help with carbon build up. Any thoughts? Is this the right thing to do? If so, when should I do it and how often, or as I said before, should I just bring it back to my mechanic. Any and all thoughts are welcome.