Tinkerer200
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Ever hear of diodes? I don't think you understand the B&S twin Kill Wire system.
Walt Conner
Aftermarket coils
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Ever hear of diodes? I don't think you understand the B&S twin Kill Wire system.
Walt Conner
Ronno6
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Boudreaux In Eunice La.
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Did you install the new coils yet ??
Boudreaux In Eunice La.
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Ronno............ I am awaiting your answer on the coils, but I will say a couple things about a diode.
1st.... If a diode is bad then it's bad. No intermediate on that.
2nd.... Have you ever hooked a car stereo up backwards and saw a puff of smoke ??? If you did you blew the protective diode that keeps the radio from being totality fried. 2 things could happen with that diode, it is open like blown fuse would and when you try to hook the radio back up again the right way it won't light up or work..... Or the diode shorted and it will still smoke when you try to hook it back up the right way again.
I had a two way communications repair and sales shop in the late 80's and most of the 90's.... I have replaced more of those diodes than I can count on a calculator LOL. Cheap too, 2 to 3 cents apiece and a total bill bill of 15 to 25 bux for the parts and labor............. Depended on if I had to fix a tracer or change fried wires going to the plug in for 12 volts....
1st.... If a diode is bad then it's bad. No intermediate on that.
2nd.... Have you ever hooked a car stereo up backwards and saw a puff of smoke ??? If you did you blew the protective diode that keeps the radio from being totality fried. 2 things could happen with that diode, it is open like blown fuse would and when you try to hook the radio back up again the right way it won't light up or work..... Or the diode shorted and it will still smoke when you try to hook it back up the right way again.
I had a two way communications repair and sales shop in the late 80's and most of the 90's.... I have replaced more of those diodes than I can count on a calculator LOL. Cheap too, 2 to 3 cents apiece and a total bill bill of 15 to 25 bux for the parts and labor............. Depended on if I had to fix a tracer or change fried wires going to the plug in for 12 volts....
Ronno6
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Ahh, the P-N junction.....the building block that is the very basis of all things solid state..........
No, I have not as of yet installed the new modules.
It may be relevant at this point to relay that, during the one period of apparent coil failure
that was of sufficient endurance that I could see that there was no spark on the #1 cylinder,
I disconnected the kill wire from the #1 coil, and there was still no spark.
After removing the coil, cleaning the contact points of the coil armature and re-installing the coil,
there was again spark.
Hence I did not suspect the kill wire circuit.
Unless, there is a coincidence going on here..............
p.s. I am typically in bed by 10................
Ronno6
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This diagram shows the 2 diodes in the kill wire circuit:
https://www.vanguardengines.com/con...s/Files/FAQs/ignition_wiring_6_pin_ms5301.pdf
So, in essence, the 2 coil kill wires ARE isolated in the reverse direction....
Shorting one kill wire to the block between the diode and the coil will kill only that coil.
It is interesting to note that I have yet to see these diodes in any electrical schematics.
https://www.vanguardengines.com/con...s/Files/FAQs/ignition_wiring_6_pin_ms5301.pdf
So, in essence, the 2 coil kill wires ARE isolated in the reverse direction....
Shorting one kill wire to the block between the diode and the coil will kill only that coil.
It is interesting to note that I have yet to see these diodes in any electrical schematics.
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Tinkerer200
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While you may be an expert with car stereos, I can assure you the small engine forums are full of mysterious symptoms caused by the B&S twin kill wire system, several times as many as by the coil. OP did not originally furnish the information that he had disconnected the kill wire from dead cylinder coil. Note that he may have solved his problem by following my first advice.
Walt Conner
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Tinker I was not telling him how to fix his problem because of a diode. He wan't to know about how a diode worked.
By the way he fixed his problem. It was a bad coil so he got 2 new ones to put on there.
By the way he fixed his problem. It was a bad coil so he got 2 new ones to put on there.
Tinkerer200
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The post where he says he installed the new coils is missing from the thread I get.
Walt Conner
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We talked off of the forum. Too much typing for the conversation we had.....