i have a 90 honda accord the problem i have is it is running ok but it
seemes to be using too much gas i put new plugs in it denso plugs parts
store didnt have ngk the compression is ok. i just pulled one of the new
plugs out and they are black not tan and it is not oil fouled i want to
check the timing but it says to take a wire and ground it before i set the
timing where is this wire also a budy of mine said that a bad o2 sensor or
a bad temp sensor would cause it to run rich like it is. there is no check
engine light on