1991 Geo Metro burnt valves

1991 GEO METRO
90,000 MILES • 4 CYL • FWD • AUTOMATIC
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1991 Geo Metro 1.0 mileage: 90.000. I keep having burnt valves problem on the exhaust valves only. I replacde the motor and that motor did the same thing.

Jan 13, 2011 at 9:57 PM
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Assuming your cooling system is in good working order, check the EGR valve for proper operation. The purpose of the EGR valve is to put exhaust gas into the combustion chamber cooling the temperature of the combustion.
Jan 13, 2011 at 9:59 PM