Dodge Magnum Problem Report

Dodge Magnum Check Engine Light Due to Carbon Buildup on Valves

(7 reports)

Carbon buildup on the valves may illuminate the Check Engine Light, indicating "Multiple Cylinder Misfires." The combustion chamber must be cleaned of carbon. There are updated valve spring retainers that will help prevent a recurrence.

misfire cylinder 1, we replace coil, plugs and injector. just to find out this was the problem. -
After driving for about 1 hr or so my engine light goes on and stays on for about 1 day then goes off, some time it will not do it for days then other time it will be off 1 day then on the next....I was told it was do to the carbon bilt up in a 2.7 , I use only good gas and add seaform every 3 tank fulls...even add to oil about 300 miles before I do a change ..and it still does it...I hate it but car still runs the same with it on or not...so I'm trying to live with it but hate it -
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