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Discussion Starter · #1 ·
I know there are numerous upon numerous topics along this line. Thankfully, between the long hours of reading posts and my service manual, i believe i have found my issue. Starting at the cdi, i checked the ohms and continuity. Finding i have a faulty engine kill switch along with shorted out ignition coil. I have replaced the coil once before with an aftermarket. It didnt last very long, so would someone possibly know where to obtain these items?

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have you checked/looked on ebay for a used oem coil ?.
 

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Discussion Starter · #3 ·
Thats where i bought this one from, it was even an ngk brand but just didnt last very long. Now that i am thinking, I know you strive on the importance of a full strong battery. I know this battery is getting up there in age, would that effect the life of the coil?

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Thats where i bought this one from, it was even an ngk brand but just didnt last very long. Now that i am thinking, I know you strive on the importance of a full strong battery. I know this battery is getting up there in age, would that effect the life of the coil?

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it won't fire worth a crap on an '86 model if your battery is not good !. before you rule out the spark plug coil ?, make sure your trying to crank her over on a fully charged battery !. tip: the battery on that model is the heart of it running or not ?! :).
 
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Discussion Starter · #5 ·
Thats where i bought this one from, it was even an ngk brand but just didnt last very long. Now that i am thinking, I know you strive on the importance of a full strong battery. I know this battery is getting up there in age, would that effect the life of the coil?

Sent from my SAMSUNG-SM-G890A using Tapatalk
it won't fire worth a crap on an '86 model if your battery is not good !. before you rule out the spark plug coil ?, make sure your trying to crank her over on a fully charged battery !. tip: the battery on that model is the heart of it running or not ?! :).
Yes i understand that but even when i ohm my coil out it has no resistance green pin to black pin. From pin to cap it is 7.5ohms at minimum and it is only at at 7.2ohm and without plug cap it should 3.7ohm and i have 2.7ohm

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Thats where i bought this one from, it was even an ngk brand but just didnt last very long. Now that i am thinking, I know you strive on the importance of a full strong battery. I know this battery is getting up there in age, would that effect the life of the coil?

Sent from my SAMSUNG-SM-G890A using Tapatalk
it won't fire worth a crap on an '86 model if your battery is not good !. before you rule out the spark plug coil ?, make sure your trying to crank her over on a fully charged battery !. tip: the battery on that model is the heart of it running or not ?! :).
Yes i understand that but even when i ohm my coil out it has no resistance green pin to black pin. From pin to cap it is 7.5ohms at minimum and it is only at at 7.2ohm and without plug cap it should 3.7ohm and i have 2.7ohm

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trim about 1/4 in off the cap end wire, then take readings again, see if it bumps up ?.
 

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Discussion Starter · #7 ·
it won't fire worth a crap on an '86 model if your battery is not good !. before you rule out the spark plug coil ?, make sure your trying to crank her over on a fully charged battery !. tip: the battery on that model is the heart of it running or not ?! :).
Yes i understand that but even when i ohm my coil out it has no resistance green pin to black pin. From pin to cap it is 7.5ohms at minimum and it is only at at 7.2ohm and without plug cap it should 3.7ohm and i have 2.7ohm

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trim about 1/4 in off the cap end wire, then take readings again, see if it bumps up ?.
2.88ohm with a 1/4" trim


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Yes i understand that but even when i ohm my coil out it has no resistance green pin to black pin. From pin to cap it is 7.5ohms at minimum and it is only at at 7.2ohm and without plug cap it should 3.7ohm and i have 2.7ohm

Sent from my SAMSUNG-SM-G890A using Tapatalk
trim about 1/4 in off the cap end wire, then take readings again, see if it bumps up ?.
2.88ohm with a 1/4" trim


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i'd almost bet ya, it will fire the plug.
 

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From green pin to black pin on the end what type of resistance should i be seeing?

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I don't have my service manual with me, it's in the shop, it should be listed in your service manual if you down loaded it from here ?.
 

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Discussion Starter · #12 ·
From green pin to black pin on the end what type of resistance should i be seeing?

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I don't have my service manual with me, it's in the shop, it should be listed in your service manual if you down loaded it from here ?.
Got a brand new battery full charge. I pulled out my test light and i tested on the ignition coil and i get nothing. I am getting a for sure fire from my exciter coil to the cdi but nothing else. Is this supposed to be like this?

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Sorry haven't been much help long week at the job I'll check book ohm mine tomorrow.
Part number 30510-kto-405
Another thing to check is make sure you have the correct resistor plug. If you're not using an OEM coil then you might not be generating enough resistance in the circuit to get a good spark.
But I will check mine tomorrow and let you know what it checks to be
 

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Discussion Starter · #14 ·
Sorry haven't been much help long week at the job I'll check book ohm mine tomorrow.
Part number 30510-kto-405
Another thing to check is make sure you have the correct resistor plug. If you're not using an OEM coil then you might not be generating enough resistance in the circuit to get a good spark.
But I will check mine tomorrow and let you know what it checks to be
No problem, i understand woke up this morning going damn its already thursday... much to my surprise. The coil i can understand but why would i not have spark to the coil itself. What pins on the cdi should be hot when the start button is pushed?

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Sorry haven't been much help long week at the job I'll check book ohm mine tomorrow.
Part number 30510-kto-405
Another thing to check is make sure you have the correct resistor plug. If you're not using an OEM coil then you might not be generating enough resistance in the circuit to get a good spark.
But I will check mine tomorrow and let you know what it checks to be
No problem, i understand woke up this morning going damn its already thursday... much to my surprise. The coil i can understand but why would i not have spark to the coil itself. What pins on the cdi should be hot when the start button is pushed?

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because the fuel cut-off relay controls the spark.
 

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Discussion Starter · #16 ·
Sorry haven't been much help long week at the job I'll check book ohm mine tomorrow.
Part number 30510-kto-405
Another thing to check is make sure you have the correct resistor plug. If you're not using an OEM coil then you might not be generating enough resistance in the circuit to get a good spark.
But I will check mine tomorrow and let you know what it checks to be
No problem, i understand woke up this morning going damn its already thursday... much to my surprise. The coil i can understand but why would i not have spark to the coil itself. What pins on the cdi should be hot when the start button is pushed?

Sent from my SAMSUNG-SM-G890A using Tapatalk
because the fuel cut-off relay controls the spark.
Anyway to test it?

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No problem, i understand woke up this morning going damn its already thursday... much to my surprise. The coil i can understand but why would i not have spark to the coil itself. What pins on the cdi should be hot when the start button is pushed?

Sent from my SAMSUNG-SM-G890A using Tapatalk
because the fuel cut-off relay controls the spark.
Anyway to test it?

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to test the fuel cut-off relay ?, sure, the manual tells ya how. but, if you just want to see if the relay works ?, remove the fuel line from fuel pump to carb, turn key on, crank it over, does the fuel pump work ?, if not ?.either pump is bad ?, or fuel cut-off relay is bad ?. YOU SHOULD HAVE AN OEM FUEL PUMP !. knock-off's suck !. if the relay is not working the pump ?, and the pump was tested with 12 volts to it, and you know the oem pumps works ?, then you can bypass the relay with a jumper wire at the relay on the wire harness side, you will need to read the correct wire pins to jump ?, I don't have my service manual in front of me.
 

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Discussion Starter · #18 ·
because the fuel cut-off relay controls the spark.
Anyway to test it?

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to test the fuel cut-off relay ?, sure, the manual tells ya how. but, if you just want to see if the relay works ?, remove the fuel line from fuel pump to carb, turn key on, crank it over, does the fuel pump work ?, if not ?.either pump is bad ?, or fuel cut-off relay is bad ?. YOU SHOULD HAVE AN OEM FUEL PUMP !. knock-off's suck !. if the relay is not working the pump ?, and the pump was tested with 12 volts to it, and you know the oem pumps works ?, then you can bypass the relay with a jumper wire at the relay on the wire harness side, you will need to read the correct wire pins to jump ?, I don't have my service manual in front of me.
What is the stock pump number?


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Anyway to test it?

Sent from my SAMSUNG-SM-G890A using Tapatalk
to test the fuel cut-off relay ?, sure, the manual tells ya how. but, if you just want to see if the relay works ?, remove the fuel line from fuel pump to carb, turn key on, crank it over, does the fuel pump work ?, if not ?.either pump is bad ?, or fuel cut-off relay is bad ?. YOU SHOULD HAVE AN OEM FUEL PUMP !. knock-off's suck !. if the relay is not working the pump ?, and the pump was tested with 12 volts to it, and you know the oem pumps works ?, then you can bypass the relay with a jumper wire at the relay on the wire harness side, you will need to read the correct wire pins to jump ?, I don't have my service manual in front of me.
What is the stock pump number?


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here ya go :). 16710-HA7-672 PUMP, FUEL $121.52 .
 

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is it pricey ?, yes !, is it worth it ?..your damn right it is !!!. buy it if you don't have a oem fuel pump ?.
 
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