I'm experiencing what I think is a misfire in my Buick that's killing my gas mileage (~20 MPG, mostly highway
). I feel it most definitely when the car is at a stop -- uneven and rough pulsing through the steering wheel -- and also sometimes smell a twinge of unburnt gas after highway rides (but not on local rides, even when they last at least as long as the highway ones).
I guess my first question is to ask if you guys agree with my misfire diagnosis or not and if you think the unburnt gas smell is related to the misfire or not.
My second question, assuming that you would agree that I have a misfire, is: How should I test the coils? I've already replaced the spark plugs and am just going to replace the plug wires, since they are 20 years old and NAPA wires are $35 for a set, but I'd like to try testing the coils so that I don't spend $100 buying three new coils when I am assuming I don't have to.
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"Senior Luna, your sense of humor is still loco... but we love it, anyway." -rickymay ____
"Your sense of humor is still loco... 
" -MBeige ____
"Señor Luna, your sense of humor is quite järjetön" -Delibes
1982 300SD -- 211k, Texas car, tranny issues ____ 1979 240D 4-speed 234k -- turbo and tuned IP, third world taxi hot rod
2 Samuel 12:13: "
David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die."
07-10-2014, 07:46 PM
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