One thing I discovered when I was tinkering with my old wreck,
it that oxygen sensors make a BIG difference ...
I discovered that my car was drinking way way too much petrol, even
for an american car ... I changed everything, the plugs, the
rotors, the wires, I was on the verge of ripping out the PCV valve
when someone suggested changing the oxygen sensor ....
I did ... and my fuel consumption went down 60% instantly
....
what probably happened was that the old one was so carbonized and
rusted that it was tricking the injection system into thinking that
it wasn't burning richly enough ...
and oh yeah, fuel injector cleaners make for a happy car also ...
