Question about 1991 Buick Park Avenue

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Wont run in gear. sat for a year and a 1/2 over weedy gravel with a 1/4 tank of gas, filled to half and drove on highway for an hour with only problem some engine misses under 40 km/h. did oil change, filled the tank to full and added high mileage fuel injector cleaner drove about 40 minutes on highway then stalled in city. has trouble starting but when it starts engine misses while idling and shuts off when switched in gear. also seems to start easier after sitting longer. any solution?

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  • macdonal Jun 09, 2009

    ran diagnostics test came back code 12 only. shud i just drop the tank and replace the fuel pump?

  • macdonal Jun 09, 2009

    was depressurizing the fuel system (had tank open and fuel pump fuse out) and had my foot on the gas, then cat converter started smoking hard, turned bright red, smelt terrible, and got really hot

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  • Buick Master
  • 6,982 Answers

When stored outdoors for any length of time, you can get a substantial amount of condensation to form inside the fuel tank (as much as a half gallon) It will remain at the bottom of the tank and really mess with how it runs. Check fuel filter...Pour contents into a clean glass jar...If any water is found at all, you can bet there is quite a bit in the tank.

Posted on Jun 04, 2009

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Posted on Jan 02, 2017

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