when standing behind the car looking at the engine the number one cylinder is on the front, passenger side. rear passenger is two. three is front driver side and four is rear driver. on the distributor number one should be the closest one to you almost on the rear passenger side if you will. the order continues counterclockwise from there. this is hard to determine unless your timing is fairly accurate. the firing order is 1432
.028"
1-3-4-2
1-4-3-2
.040
.024
Usually if im working on an engine that a cylinder is missing. I first check to see if there is spark to that plug. if thers no spark, then its either a plug wire or distributer cap problem. then check the plug, if you got the plug sparking, you may have engine trouble
The suggested spark plug gap for a 1973 Harley Davidson is 0.040. It is the suggested gap for most of the spark plugs of that era.
One at a time
.040
Spark plug order? there is no such thing.
( .035 inch ) spark plug gap for a 1973 Dodge 318 V8 engine , according to my Chilton book
No...