Gas mileage for 1985 Pontiac parisienne

1985 PONTIAC

MEMBER
3 POSTS
FOLLOW

I have a 1985 pontiac parisienne station wagon. Recently I replaced everything under the hood. Remanufacatured engine, transmission, starter, spark plugs and high tension wires, distributor, radiator and hoses, power steering pump, fuel pump and egr. I also replaced the catalytic converter. But my problem is my gas mileage is 10 miles/gal. What am I missing? It's running great but only the gas mileage is worse than before I replaced everything under the hood..
Thank you in advance for any advice you can give me.

Feb 8, 2007 at 2:37 PM

STRAILER

CAR REPAIR CONTRIBUTOR
54,354 POSTS

first check the compression and compare it to factory spec's then check the fuel air mixture with a gas analyzer to see if the mixture is to rich. also check the ignition timing.

Feb 15, 2007 at 11:38 AM

Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.