HELP!!!NO Spark on my 440, I have 12v+ to the coil, HELP!!!!

jwrape · Post by **jwrape** » Sat Jun 05, 2010 6:27 am

resisitors are good. i swapped them too.

alexander38 · Post by **alexander38** » Sat Jun 05, 2010 7:07 am

do you have safety fuse's on your helm. my boat has them port and stbd. upper and lower. Blew one once and it took me awhile to remember they're there.

jwrape · Post by **jwrape** » Sat Jun 05, 2010 7:09 am

alexander38 wrote:do you have safety fuse's on your helm. my boat has them port and stbd. upper and lower. Blew one once and it took me awhile to remember they're there.

I've checked all the fuses and looked for any wired in fusable links I could find.

prowlersfish · Post by **prowlersfish** » Sat Jun 05, 2010 7:39 am

You have low voltage at your resistor correct? Check the main harness plug at the engine . if thats OK check the voltage at the switch , If you have 12 volts at the switch and low voltage at the rester you have high resistance in the wiring or something shorted in the ignition system pulling it down.

you can try using a fused jumper wire from a good 12 volt source to the resistor and see if you get spark , if you do then you have a wiring issue .

again recheck the connector at the engine

jwrape · Post by **jwrape** » Tue Jun 08, 2010 9:03 am

Well I figure out what it was.....

I ended up swapping the distributors out from the good motor to the bad motor. It started up immediately. I put the bad distributor in the good engine and it didn't start. So I went and ordered a new one and will install it today. Although I have not idea what could have broken in the other one.

Stripermann2 · Post by **Stripermann2** » Tue Jun 08, 2010 10:05 am

jwrape wrote:
Stripermann2 wrote:Not concerned with the cap or rotor, without either of these two, you will still have spark from a coil.

Now, the reluctor, if equipped, is below the rotor and is held onto the shaft by one, sometimes two vertical roll pins. When this turns with the shaft, it creates and breaks the magnetic field with the pick-up, or magnet which is mounted on the breaker plate. Any problem here, you will not have seconday ignition output from the coil. It's also possible that you have a breaker plate issue which has moved the pick-up too far or out of alignment from the reluctor wheel.

Disconnetc only the tach wire from negative side of coil to eliminate any short to ground. The electronic box recieves signals from the timing, opening of the magnetic filed of the reluctor and pick-up and will pulse a ground to the coil. This produces the spark. You cannot ground the coil fast enough to produce the spark you need by grounding the wires from the negative side of the coil.

Does this help you understand the system a little better?
The distributors are only 5 years old. They should be in good shape.

Well I'm glad you figured it out. The pick-up probably went south.

jwrape · Post by **jwrape** » Tue Jun 08, 2010 10:06 am

The pick-up probably went south.

Yea, I guess so..