Question about 1994 Buick Skylark
6 cyl 3.1 automatic. runs smooth except random "miss" sometimes once sometimes up to three in just a few seconds. It does it while idling as well as high speed. The car was sitting for a while. It also has a heater that doesn't work and a puddle in the passenger side floor.
The miss is more than likely due to old plugs, wires, cap, and rotor. A complete tune-up would probably solve your problem. It's also possible that you could have water in the gas tank as well, because of it sitting so long, or the fuel could be bad. There is some fuel treatment that will not only help the water in the tank but also cleans the fuel injectors as well; I'm not sure of the name, but you can check at any local auto parts store for a bottle of it... As far as the puddle on the passenger side floor goes, that is a pretty good indicator of a heater core with a hole in it. You'll need a new heater core, but before you go replacing it, because they can be quite costly to replace; Have a mechanic look over the entire cooling system, which includes the heater system, because you probibly need new hoses as well and a heater control valve, due to the car sitting for a while, the hoses tend to dry-up and crack, especially if there was no anti-freeze in it- just straight water, that usually will freeze up and rust the heater control valve and rust up the block as well.
Posted on Apr 29, 2010
Testimonial: "Yes it could be the heater core. Have also heard it is a defect in design that causes the leak. It is water without antifreeze in the puddle. "
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Posted on Jan 02, 2017
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