Gas Milage Loss With New Pulley

[tblake]

ok, lets recap, you changed the plugs wires, fuel filter and air filters, right? And Im hoping you used ac delco parts.

Have you checked fuel pressure to make sure that it isnt unusually high becuase of a return line restriction causing the car to run excessively rich?

How about a vacuum test to make sure that the cat converter isnt partially plugged.

Like the other guys stated, have you checked to see what brand O2 sensor was installed when you had your exhaust work?

Are there any codes being set in the PCM?

Have you tried unplugging the MAF sensor on a tank of gas to see what happens?

[GTP Version 2.0]

A question I often give to those who discredit Acetone is the particulars of its application. Often people feel that acetone is acetone... not true. The acetone you get at home improvement stores and paint shops actually contains other solvents and additives for painting purposes. Only 100% will do. No exceptions. A good place to look for it is under the name "nail polish remover." Also I would advise those discreditors to look into the chemical formulae for gasoline and other petroleum distillates. Much of the gasoline you buy on a day to day basis is not infact gasoline, but contains toluene, and of course, acetone. The application of these chemicals is a means for Big Oil to artificially increase the octane rating of their gasoline, and thus is found in octane booster and fuel system cleaners.

Small amounts is all that is needed. Every car is different so record the pros and cons at each fill up. Never exceed 3.5 oz for every 10 gallons of gas. If these words are still not enough... check into the cheif component of the "Techron" additive from Chevron gas stations.....its acetone.