.035
.035
.035
Just as long as you get the proper length plugs for the engine you won't damage anything.
.045"
If it is a stock original engine and ignition system the gap would be .035".
The engine needs spark, fuel and compression to run. You have one of those missing.
you need three things for an engine to run. proper air/fuel mixture, compression and spark at the proper time.
65 degrees
The proper gap is .035
.060
.045 on most,what engine do you have?
Count how many spark plug wires there are.....