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487 Posts
Discussion Starter · #1 ·
My '76 TR7RV has developed a curious little miss on one cyl like a conga dance. It has a good ol' stock points ignition, the only electrical deviation over the years was a 3-phase alternator 15 years ago thats never been a problem.

The problem:

Doing a little bit of debugging by pulling the plug leads, its apparent that every few seconds the right cyl drops 2 or 3 beats - no spark then normal spark for a dozen, then no spark for 2-3. Continues like this.

Any tips on easy way to isolate the offending component? Or likely suspect? Seems like it would be connections or wire, coil, condenser, (points look ok). Its rideable but the missing makes ya nervous.

I suppose I could start to swap left-to-right coil, condenser, wires one at a time to see which one makes it move (if any).:confused:

  • If the problem doesn't move then it must be wiring.
  • If it does move it's the component.
  • If it goes away it's a bad connection somewhere that got fixed fiddling with the wires and spade plugs?

Its always something...:rolleyes:
 

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Premium Member
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487 Posts
Discussion Starter · #4 ·
Both coils are original equipment lucas on mine. 34 years on coils is not too bad.

Out of curiosity, since I will get to fiddle this weekend, is there a readily available original style replacement or is it internet order time if I need a new coils/condenser?

Not interested in changing to electronic ignition, btw.
 
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