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1. Check all of the plug wires, on both ends, for good fit connection and especially the igniter wire. 2. If the truck has more than 50k miles on it's last tune up, consider doing a new tune up on it. Platinum plugs work great. Wires, plugs, distributor cap, rotar button. Note - Spray silicone inside dist. cap and on both ends of the new plug wires. This help protect against drown out if water is splashed on these areas. 3. Check to make sure the distributor cap is seated properly. 4. Check for correct timing setting. 5. If fuel filter hasn't been changed in over 24K miles, changes fuel filter(s)and and then run a bottle of fuel system cleaner to a tank of fuel. This helps in cleaning the injectors / TBI.

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Q: What would cause a 1992 Chevy Silverado 350 v8 5 speed to miss at a steady speed or when letting off the gas?
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