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Painter3066's avatar
Painter3066
Explorer
Dec 26, 2015

Engine Trouble 2006 W-22 8.1

Left for Florida last night and about a hour into the trip engine started to backfire and hesitated while going up hills. Ran fine on flat road going back home but engine missed a lot. Coach is 10 years old and I never have changed spark plugs or wires. I have 43000 miles on it any thoughts?
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  • Dick_A's avatar
    Dick_A
    Explorer
    Dec 26, 2015
    This could also be a sign of the fuel pump failing. However, check the fuel filter first.
  • donfrump's avatar
    donfrump
    Explorer
    Dec 26, 2015
    Painter3066 wrote:
    Left for Florida last night and about a hour into the trip engine started to backfire and hesitated while going up hills. Ran fine on flat road going back home but engine missed a lot. Coach is 10 years old and I never have changed spark plugs or wires. I have 43000 miles on it any thoughts?


    backfiring while underload(going up hill etc) sounds exactly like bad plug wires and or plugs for sure

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