flow chart

[John *.?-!.* cub owner]

Could someone that is better with computers than I am take these instructions and make them into a flow chart that could be saved on the forum? I am tired of typing them and afraid I will make a mistakes as many times as I have done it. Might need to expand it ot start with good spark from coil high tension lead yes or no.

Ignition switch on, check + side of coil (side going to switch) It should have voltage anytime switch is on. If no voltage work back toward switch and beyond it to find why no voltage.

If voltage at + side of coil move to negative side. Engine stops most of time with points closed, which provides a ground for coil, so no voltage there would be normal. As engine is cranked over the voltage should be on when points open and off when points close so the light flashing or meter jumping would be normal.

If no voltage at - side of coil at anytime, disconnect wire from coil to distributor. If still no voltage at - side, replace coil. If voltage at - side when wire removed, check distributor for short, either points stuck, condenser shorted, or insulator or wires shorted.

If voltage at - side of coil all the time engine is cranking, most likely burned points, but could also be bad wire between distributor and coil, or bad connection. Could even be points out of adjustment. I have seen points that had rusted and the spring broken, causing an open, and contacts that have fallen off of points.

[Don McCombs]

John, does this look like what you want?

EJP Flow Chart New.pdf

(30.37 KiB) Downloaded 604 times

What would you like to call the flow chart?

[staninlowerAL]

I like it. Thanks John and Don.

[Stanton]

Could someone that is better with computers than I am take these instructions and make them into a flow chart that could be saved on the forum? I am tired of typing them and afraid I will make a mistakes as many times as I have done it. Might need to expand it ot start with good spark from coil high tension lead yes or no.

Ignition switch on, check + side of coil (side going to switch) It should have voltage anytime switch is on. If no voltage work back toward switch and beyond it to find why no voltage.

If voltage at + side of coil move to negative side. Engine stops most of time with points closed, which provides a ground for coil, so no voltage there would be normal. As engine is cranked over the voltage should be on when points open and off when points close so the light flashing or meter jumping would be normal.

If no voltage at - side of coil at anytime, disconnect wire from coil to distributor. If still no voltage at - side, replace coil. If voltage at - side when wire removed, check distributor for short, either points stuck, condenser shorted, or insulator or wires shorted.

If voltage at - side of coil all the time engine is cranking, most likely burned points, but could also be bad wire between distributor and coil, or bad connection. Could even be points out of adjustment. I have seen points that had rusted and the spring broken, causing an open, and contacts that have fallen off of points.

John, does this look like what you want?

EJP Flow Chart New.pdf

What would you like to call the flow chart?

Probably should have "Distributor" somewhere in the title, since this is not for those with magnetos. Correct?

[Urbish]

How about this one? Let me know if there needs to be any changes or if the wording should be more specific.

[John *.?-!.* cub owner]

......

Probably should have "Distributor" somewhere in the title, since this is not for those with magnetos. Correct?

You are correct.

[John *.?-!.* cub owner]

Urbish, it is much better than I coudl even think about doing, but the first step, rather than rejoice, needs to point to rotor, cap, wires, plugs as possible problems.

[Urbish]

Revision A attached:

[John *.?-!.* cub owner]

Looks pretty good to me, but needs note: For 12 volt negative ground, for 6 volt positive ground the + and - of the coil would be reversed. Or might be ahead to reverse the + and - on the drawing to make the chart for 6 volt systems since there are a lot more of them than 12 volt, and include note that 12 volt would have + and - of coil reversed. Wonder if might be ahead to include a copy of Farmall Bob's 6 volt distributor wiring diagram with a note it is his drawing as part of the how to thread.