Rough idle 1996 Chev.PU 350 Vortec

Asked by Sep 29, 2017 at 12:12 PM

Question type: Maintenance & Repair

Truck has 250k miles, I put the last 100k on it ,changed oil every 3000 mi and it has always ran fine.After I retired it set for 2 months ,before I started using it again.Since then it has had a rough lopping idle. Starts right up and drives out fine ,but rough idle.No codes on readers. Any ideas please.

1 Answer

This was since I retired a year ago. Changed plugs ,fuel filter, thought about sticky valves or lifter ,put seafoam additive in gas and oil seemed to help a little.

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