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Gas mileage for 1985 Pontiac Parisienne

Tiny
1985 PONTIAC
  • MEMBER
  • 1985 PONTIAC
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.
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Thursday, February 8th, 2007 AT 2:37 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,420 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.
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Thursday, February 15th, 2007 AT 11:38 AM

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