Depends on where Old checked the spark. If he checked it by testing the high tension lead from the coil and got a good spark it does not necessarily mean he would consistently get a good spark at all of the plugs.
I have a clip on by pass unit made from an old Toyota hybrid unit. It only uses the points in the distributor and bypasses the in house coil and condenser. I hooked it to an old misfiring Jubilee three times and each time it ran fine. When I removed it and restored the regular system it ran like crap. The mechanics said can't be the distributor. They fixed it by adjusting the carb. It ran okay a couple of days then went bad again. Problem was two new condensers. Old said the original condenser was okay. Intermittent failure of a component is a hair puller.
I did have an intermittent failure of a Lucas coil (Prince of Darkness) on an old Jag and it did run like Old's Ford. But his ford does not have a Lucas coil. Hence the joke.
Despite my stories I still think the majority of symptoms indicate the carburetor and if not then somewhere in the fuel system.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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