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Old 03-17-2011, 10:13 PM   #1
2badgn
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Join Date: Nov 2009
Location: Yonkers, NY
Posts: 277
What can cause engine to missfire?

1984 GMC 3500 2wd 350 engine

Last year, I had the timing chain changed along with cap, rotor, plugs, wires. truck was back firing after I turned off engine. A timing adjustment fixed that.

Truck is now at mechanic.
When driving, truck will misfire for like 2 seconds and then back to normal.

What things can cause misfiring?

Thanks
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