0.040 in - verified, page 6-64:
first i would try the oil pan
Look at the lower or rear of radiator
According to Champion spark plug applications chart, the gap for 2000 Pontiac Grand Am 4cyl engine is .050.
oh its for a Pontiac sunfire
im not sure but if you follow the spark plug wires they will take you to the coil packs
To change the spark coil pack on a 1998 Pontiac Sunfire with a 2.4 engine, first disconnect the battery. Then remove the coil pack and spark plug. The spark plug should also be replaced with the new coil pack for best performance. Insert the new spark plug, then the new coil pack being careful not to bump any of the many other electronic parts. Then reconnect the battery.
The spark plug gap for the 2003 Pontiac Sunfire 2.2 liter 4-cylinder is .043 (in thousandths). The '03 Sunfire gets up to 25 miles per gallon in the city and 33 mph on the highway.Ê
I think that in all of the Sunfire engines, the plugs are in a row across the front of the engine. Try locating and following the plug wires to help you. FriPilot