Please help with this Spark!!

[88seville100]

I have another thread related to this issue, but I think I have narrowed that problem down to a weak spark so I wanted to make a thread specific to that.

The problem is I can only get the spark to jump a very small gap. Probably about 1/8". I did DVA the stator and timer base. Stator was supposed to read 950-1100 ohms and 150v. I got 850 ohms and around 140 volts. I know the resistance is low but the volts are pretty close so I figured the stator was good.

The timer base was all where it was supposed to be.

Then the orange wires going to the coils were very low. They are supposed to be around 150v. On those I got about 3v. So I figured the power packs were bad. So today I tried a new pack and same results. Still very weak spark and still only about 3v to the primary wires. I tried with stop wires connected and disconnected.

What am I missing here? Please help I am running out of ideas.

 

[j_k_bisson]

Re: Please help with this Spark!!

Well seeing you started a new thread, you might want to relist what kind motor and size info.

 

[j_k_bisson]

Re: Please help with this Spark!!

I am assuming this is a v-4 or v-6 evinrude. What RPM are you spinning at? I believe that 300 rpm's are minimally required to generate suficient voltage for spark.

Has your stator leaked black goop?

It could only be stator or power packs, By your own admission you stat you changede the power packs. Might as well change out the stator. I got a good deal from Ebay on my stator. Might want to check them out.

 

[88seville100]

Re: Please help with this Spark!!

Sorry its a 1987 Evinrude 225. E225TXCUB. I did not notice anything leaking from the stator. It seemed to be ok. And the battery is good and it is cranking around 250-300.

 

[88seville100]

Re: Please help with this Spark!!

So I was looking at stators and it seems that my motor has a stator for a 1988-1992. It looks like the only difference in this stator is an extra coil with the 2 orange wires coming out. The 87 stator just has a blank there. So right now I have those orange wires capped off so this stator should be the same as the 87 right?

Well hopefully someone else has some more suggestions because I am almost all out of ideas.

 

[F_R]

Re: Please help with this Spark!!

So, stator voltage going into the power pack is reasoably good, and very low coming out of the power pack you say? One has to wonder where it is getting lost. Have you tried disconnecting the kill wire?

 

[88seville100]

Re: Please help with this Spark!!

Yes I have disconnected the kill wire.

 

[88seville100]

Re: Please help with this Spark!!

bump

 

[88seville100]

Re: Please help with this Spark!!

Someone please help. I just confirmed I am getting 140v into the power pack, but now I am not getting anything out of the pack to the coils. This pack only has 2 connections, one from the stator and another from the timer base. Then it has another wire that goes to the kill switch, which I left disconnected, and then the primary wires that go to the coils. How can power be going into the pack, but not out?

 

[j_k_bisson]

Re: Please help with this Spark!!

The timer base tells the power packs when to fire/send voltage to the coils. The stator give the power packs the voltage to send. Double check the timer base is sending a signal voltage when he motor spins by checking the connection wire going to the power packs with the DVA. If you have power from the stator going to the power packs, and no trigger signal then they will not fire. Also the kill wire will stop the flow of voltage due to no ground. That wire gounds out the voltage when activated.

Just my thinking.

 

[AlTn]

Re: Please help with this Spark!!

Along with j_K's line of thought...suggest you remove the flywheel and examine the magnets to see if they are loose, cracked, or have migrated out of position

 

[88seville100]

Re: Please help with this Spark!!

I have checked the timer base voltage before and all the wires were within spec. I guess I could double check though. Could the timer base still be bad even though the ohms and volts are all within spec?

I would like to know more about the kill wires. The pack on the stbd side has the kill wire that comes off of it. That is the wire I left disconnected. Should I connect that one? Also when should I be getting continuity in those wires? I have tried with key on and key off and cant seem to ever get continuity.

 

[tko1802]

Re: Please help with this Spark!!

i have the same problem with the same motor year and everything and we checked the fly wheel and the magnets where all messed up and but we fixed them and we still have the same prob the motor fires up on the first try but dies after a little and then it will not fire up any more. It have low spark but then we took a spark plug of and it fired up again why is that

 

[Rick.]

Re: Please help with this Spark!!

If your talking about the kill wire you will only get continuity when the lanyard is pulled out of it's socket. That wire grounds the ignition causing a no spark. Best of luck. I'm watching and learning from your thread. I have a no spark on my 1995 40 HP right now. Rick.

 

[j_k_bisson]

Re: Please help with this Spark!!

Seeing you have new power packs installed and still have the issue with no spark. If you unplug both sides this will eliminate any kill switch and shift interupter switch you have on the motor. You will not be able to turn off the motor. When the single wire plug is grounded out the power packs will not fire the coils. I am assuming that the trigger signal voltage from the timer base is dumped to ground with this wire. So if you test that one you should not get continuity through it. Also on the #1 clinder bank the is a diode between the the left and right sides. This is to stop the **** interupter switch gounding out the signal (timer base voltage) to one side only. Not both.

I would check every connection and wire going into the plug from both the timer base and stator. Its is sounding more and more like a bad connection, bad wire contact in a plug, rotten wire, or grounded out wire. I would suggest you start checking each wire for continuity, then move on to the plugs, after they are plugged together for continuity, then for ground on every wire. If your components are checking out fine then its probably old wiring in the wiring harnes. I had a ton of spots where the rubber coating was wore through on my harness. Had to basically rebuild the harness in a couple of spots. In the others a little marine heat shrink and good as new.

Also time to go through every ground and clean the contact furcae on both the wire and block. Then inspec the wire itself.

 

[petryshyn]

Re: Please help with this Spark!!

have you measured the stator charge voltage with a DVA when it is connected and also disconnected to the packs?

 

[SparkieBoat]

Re: Please help with this Spark!!

see site below for a free ignition trouble shooting guide...

 

[88seville100]

Re: Please help with this Spark!!

have you measured the stator charge voltage with a DVA when it is connected and also disconnected to the packs?

Yes I have. With the pack disconnected I get about 135-140v from the stator. With the pack connected I get from 140-150V.

 

[88seville100]

Re: Please help with this Spark!!

Just to be sure, let me tell you guys how I am doing this power pack test. I slide the red lead of my DVA under the boot of the primary wire on the coil, then hook the black lead to a ground on the engine. Then crank the engine at the solenoid and watch the meter. This is the correct way of checking primary wires right? Also I have tried meter on both dc and ac with no change.

 

[j_k_bisson]

Re: Please help with this Spark!!

Your motor is beyond me then. Mine I just replaced everything other than the Timer base. It runs great. But it was expensive.