rcgasser
Senior Member
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- 2,383
- Location
- Atlanta, GA
As quoted from the list: A spark plug check can be carried out in the following manner; remove plug from engine, reconnect the spark plug into the plug boot, touch the plug thread to the engine block or exhaust header, pull-start and check if plug is firing. NB. Even though a spark may be visible, it may not be strong enough to spark under compression.