got my J running

brian(MN)

Member
A few years ago my '37 JT started running bad, had to use the choke just to keep it running. So I put in the shed, drained the gas. So, the last couple of evenings I took the carb off, soaked and blew it out good, flushed out the tank as I see the intake is above the bottom of the tank. I got it going, ran alright, but started hard. This morning I could not get it started, cranking by hand and pulling. I had spark. and gas to the carb. I took out a plug, looked old.( I am sure they were decades old) I called NAPA to see if they still made W-14 plugs, he had four in stock (at $10 each) That was a surprise! I put them in and gave the crank a tug and it fired right up. Now it needs a good wash.
 
Glad you got it running again. Spark plugs aren't as cheap as they used to be are they? ...but then again nothing ever is.
 
30 years ago I bought a JT from Don Biewer at Barnsville, Minnesoda, it had the original engine.
I have sold it some time ago.
 
I find that a lot of people do not realize that a spark plug will "wear" out. The electrode will burn off until it is rounded, causing it to be harder to jump a spark, regardless of the gap. Think about it: a new plug has a sharp edge to jump the spark. An old one has a rounded edge, which takes more energy to cause it to arc. This really makes a difference in a crank start engine. Also, only use copper plug wires.
 

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