Question about 1993 GMC Sierra
The spark plug gap for gmc sierra with the 350 ci 5.7 is 0.35 Im not sure what it is for the other motors but if you have a 350 in a 1993 sierra its 0.35 I know this is correct because its on the sticker under my hood and im changing my oil right now so I just read it about 20 seconds ago....
Posted on Sep 06, 2013
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Posted on Jan 02, 2017
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If you're replacing the spark plugs in your car
engine, you'll need to set the gap before reseating the
spark plug. The gap is the distance electricity arcs between the ground
electrode and center electrode. The gap must be set correctly to ensure
maximum performance. Here's how to set the gap of a spark plug.
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