Air gap between coil module and flywheel should be .010 inches.
1982 318 pick up coil gap
A business card. GAP
You can use a standardbusiness card for the gap.
What I do at the shop is fold abusiness card in half . Put it in between the Coil and Flywheel. Bring the magnet around to Coil and tighten screws down. Perfect gap!
inferior part design and sometimes a incorrect spark gap or worn plug can overwork coil a larger gap can double the the voltage needed to jump the gap causing the coil to run hot. ford is know for coils dropping like flys
ktungutngutbh sluck
I think what you are wanting is the air gap between the flywheel and the coil . The gap is somewhere around .002 in , but if you will take 2 matchbooks take off the covers and use them for spacers between the coil legs and the flywheel . Role the flywheel around till the magnet pulls the coil in . Place the matchbooks between the coil arms and the flywheel and tighten the screws . Check the spark plug and make sure you have good fire .
For most small 4 cycle cylinder engines using a magneto and a coil to provide electricity to feed the spark the gap is .006 to .010.
To set the coil and pulley gap on a Homelite 25cc weed eater, first, remove the spark plug and access the ignition coil. Place a thin business card or feeler gauge between the coil and the flywheel, then adjust the coil until it lightly touches the card. Secure the coil in place and remove the card, ensuring a proper gap is maintained. Finally, reassemble the components and test the weed eater to ensure it starts smoothly.
The coil has two bolts to hold it in position. Loosen both bolts, place a .010 - .014 feeler gauge (or business card) between the coil and flywheel, and tighten bolts. The size of the gap determines the timing of the engine.
Sounds like the coil. The high side of the coil should be 35~70 kilo volts. 11 volts will not jump the spark gap. http://www.marksatterfield.com