[mcandies]

Anyone know what would cause a popping or backfire that sounds like it may be in the exhaust system under the hood? I had this happen a few times while returning home, towing my 5th wheel trailer, (after traveling about 500 miles). It would pop a couple of times and the truck would jerk like a car with a miss. This happened a total of 5 times in about 30 minutes then never occured again the rest of the way home, (about 400 miles). A few days earlier in the trip we noticed a strong exhaust smell in the cab when stopping for red lights.