A friend pointed out an a/f setscrew and idle setscrew on the passenger side of the engine. I'm not sure which is which.
I've already changed the oil, air filter, breather filter, spark plugs, wires, distributor cap & rotor, and fuel filter.
Fuel economy was 20mpg (usg) & now it's just baaaarely any better, if at all. Fueleconomy.gov says others are reporting 24mpg in real world driving & I'd love to get that. (No, I don't drive it hard at all.) I've noticed that the exhaust smells quite strongly of gas, especially at startup. I'm pretty sure every cylinder is firing now, so the only thing I can think is that it must be running too rich and needs to be adjusted.
In addition to which setscrew to adjust, how do I go about telling when it's right w/o some sort of gas analyzer? Just a sniff test of the exhaust?
Any help/info is appreciated. Oh, and yes, I did check the owners manual maintenance section and there isn't anything in there at all about this.