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Old 11-03-2011, 02:44 PM   #1
31dan
Junior Member
 
Join Date: May 2010
Posts: 12
Default Spark advance or Spark retard

I'm going up a very steep hill do I advance the spark (move lever down) or do I retard the spark (move lever up) My 31 PU started backfiring today. I could fill the power coming and going. I had the gas pedal to the floor. The truck runs very good on level roads. I probably had only about 2 or 3 gallons of gas. Any help would be good.
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