ENGINE MISSFIRE-HARD THROTTLE 2.0 TURBO/ REVISED PLUG GAP. Pontiac Sunbird 1987

For 1990-2009 cars

# ENGINE MISSFIRE-HARD THROTTLE 2.0 TURBO/ REVISED PLUG GAP

#### VEHICLES AFFECTED: 1987 VEHICLES WITH 2.0L TURBO OPT. LT3 (VIN CODE M) ENGINE

Some engines may misfire under hard throttle, for example during turbo boost conditions. The miss is caused by excessively high ignition system demand voltage of the high gap (.060") spark plug and combustion conditions.

The misfire is repairable by installing a .035" gap spark plug with service P/N 5613820 (R42XLS, a previous 1986 turbo spark plug).

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