NSF 15C No Spark.

[Panhandle Nick]

Would anyone know the resistance for the Pulse Coil? Can't find the spec anywhere. I think the ignition coil is fine, I checked the safety lanyard and the neutral safety switch, all good. My current reading is about 194 ohms for the pulser coil.

Thanks
Nick

 

[Panhandle Nick]

This is the pulser coil and when measuring across the two wires it's at 202 ohms when in that mode on my multi tester and when testing continuity it reads nothing. I'm assuming this is a bad Pulser Coil? Could tis be the reason I have no spark?

Thanks
Nick

 

[km1125]

194 to 202 Ohms sounds in the ballpark. Your meter might be thinking "continuity" is a dead short (like you're tracing a wire). If your meter can read peak voltage, then see when you get from the pulsar when you're spinning the engine.

You're getting no spark, right? Did you actually disco the lanyard wires and bypass the neutral safety to test? ( I didn't know the C had a neutral safety sw)

 

[Panhandle Nick]

194 to 202 Ohms sounds in the ballpark. Your meter might be thinking "continuity" is a dead short (like you're tracing a wire). If your meter can read peak voltage, then see when you get from the pulsar when you're spinning the engine.

You're getting no spark, right? Did you actually disco the lanyard wires and bypass the neutral safety to test? ( I didn't know the C had a neutral safety sw)

Hi km,
I did bypass the safety switch and it has a neutral safety switch, it has an electric start. No spark is my problem, was hoping I found the problem with an inexpensive part.

 

[km1125]

I don't know the failure stats on pulsar coils, but I suspect they are very low. Unless it has physical damage or shows a short or open on the windings, I'd bet it's AOK. Why do you think the ignition coil is OK? Have you made primary and secondary tests on that?

I believe the neutral start just disables the starter from turning, and has no effect on spark. When you say you "bypassed" the safety switch, does that mean you jumpered it or disconnected it? On many, the safety switch is just a grounding switch to disable the ignition, which means if you jumper it you are disabling the ignition. Just disconnecting it would be the way to isolate it as a cause. Not exactly sure if that applies to that particular motor, but something to consider.

 

[Panhandle Nick]

I don't know the failure stats on pulsar coils, but I suspect they are very low. Unless it has physical damage or shows a short or open on the windings, I'd bet it's AOK. Why do you think the ignition coil is OK? Have you made primary and secondary tests on that?

I believe the neutral start just disables the starter from turning, and has no effect on spark. When you say you "bypassed" the safety switch, does that mean you jumpered it or disconnected it? On many, the safety switch is just a grounding switch to disable the ignition, which means if you jumper it you are disabling the ignition. Just disconnecting it would be the way to isolate it as a cause. Not exactly sure if that applies to that particular motor, but something to consider.

Hi,
This is my coil, I'm calling the ignition coil but maybe I'm wrong. It only has two wires coming into it and the spark plug wire is going out of it. Does this have a primary and secondary winding? Another curiosity is one coil that goes to two spark plugs. Maybe I didn't properly test this.

 

[km1125]

The two spark plug wires coming out of it are the secondary. When high voltage is there, BOTH spark plugs have to fire at the same time. If there is an issue with just one spark plug, then it very well could affect the other. You want to make sure there is some resistance from one spark plug wire to the other (probably a high value... like 5K or 20K of resistance), and NO continuity to ground. It is possible there's a high voltage leak to ground that you can't detect with a normal voltmeter though, so just those checks don't absolve the coil. On the primary side, there should be a very low resistance between the two terminals - typically 1 Ohm to 3 Ohms.

When you're doing a spark test, you need both spark plug wires to be connected. One can still be connected to one spark plug in the engine, and then the other wire can be tested if there's a spark to ground. If you just disconnect BOTH wires and just test one to ground you'll likely not see a spark.

 

[Sea Rider]

If the Ignition Coil is within its electrical tech specs and does not produce any spark at both plug's end caps, troubleshoot the Pulser Coil and CDI as well...

Happy Boating​

 

[Panhandle Nick]

If the Ignition Coil is within its electrical tech specs and does not produce any spark at both plug's end caps, troubleshoot the Pulser Coil and CDI as well...

Happy Boating​

The latest is that i found that both plugs have a spark but it's weak in my opinion. Im currently tracking down a DV adapter to test some components. I'd like to know the specs to test resistance but can't track them down.

 

[Sea Rider]

The latest is that i found that both plugs have a spark but it's weak in my opinion. Im currently tracking down a DV adapter to test some components. I'd like to know the specs to test resistance but can't track them down.

If assuming the spark is weak, test both sides with a spark gap tester adjusted to 11 mm, if the spark jumps that far well the IC is in good shape...

Happy Boating​

 

[Panhandle Nick]

If assuming the spark is weak, test both sides with a spark gap tester adjusted to 11 mm, if the spark jumps that far well the IC is in good shape...

Happy Boating​

Thanks a bunch Sea rider.

 

[Faztbullet]

Nick..that coil is the ignition coil as you motor uses lost spark operation,meaning both plugs fire art same time. Need to open air test the spark gap. It should jump a min 3/8 air gap. If it cannot jump this gap it will not fire under compression. Your ignition uses several coils, charge coils to furnish voltage for spark and pulsar coils tell when to spark the cylinders so if it sparks pulsar is working, If spark output is weak at plugs it is either charge coil output to CDI is low(under flywheeel) or capacitor in CDI is bad

 

[Panhandle Nick]

Nick..that coil is the ignition coil as you motor uses lost spark operation,meaning both plugs fire art same time. Need to open air test the spark gap. It should jump a min 3/8 air gap. If it cannot jump this gap it will not fire under compression. Your ignition uses several coils, charge coils to furnish voltage for spark and pulsar coils tell when to spark the cylinders so if it sparks pulsar is working, If spark output is weak at plugs it is either charge coil output to CDI is low(under flywheeel) or capacitor in CDI is bad

Hello,

So that ignition coil would not be the problem? It would be the CDI or the charge coil under the flywheel? I do have a very week spark.

 

[Faztbullet]

Need to DVA test output to coil...

 

[Sea Rider]

Hello,

So that ignition coil would not be the problem? It would be the CDI or the charge coil under the flywheel? I do have a very week spark.

Have a week spark in the spark plug's connector output, tested with which spark tester method/device or in the spark plug itself when grounded ?

Happy Boating​