Join Date: Oct 2012
Location: Saskatoon, SK. Canada
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JLO/CUYUNA Spark Problems
I am working on a '76 JLO/CUYUNA 440 engine with spark on #1 PTO cylinder only. I have changed points & condensors, then disconnected external coils. Then I hooked up a continuity light hooked from the blue wire leading from #1 points to the corresponding external coil & ground. As the #1 points start to open the light dims just as it should. When I try the same with #2 points blue wire and ground, there is no change at all. I have checked continuity on the 2black wires coming off of internal ignition coil to both points, no apparent break in circuit.
This is the typical BOSCH stator used on points type ignition of the '70's, with a heavy wire internal lighting coil on left and then 2 coils stacked on the right with ignition being the bottom coil and then a small lighting coil on top.
Can anyone let me know what could possibly be causing me so much grief in diagnosing why the #2 points/condensor won't generate a spark?