40 force no spark low voltage

[capeape56]

95' Force 40 HP. Was working fine but when throttling down to go to idle one day, it just kept on going down to the point where it died and wouldn't restart. Cranks like crazy, power trim works, battery strong but no spark. Saw jd's forum from back in May and his problems were similar to mine. Had mechanic check it out and the coils were good but no spark. He thought it was the CDI at fault. I got a new one and no luck there. Did complete check for continuity and all readings good. Only thing we found suspect was that the output voltage to the coils is around 38 volts - same for the old CDI or the new one. Seems to me it should be much more than that. I'm thinking something went screwy with the stator and thats why I lost my voltage. I would guess pulling the flywheel and checking there is a logical step? What should I look for? Any suggestions? Fuel consumption is really good lately but I didn't want a raft

G LeBlanc

 

[jerryjerry05]

Re: 40 force no spark low voltage

Yup can't beat the gas mileage of a paddle!

Outboard ignition . com or CDI electronics has test procedures.
First make sure all connections are good.
NO SPARK ON ANY CYLINDER:
1. Disconnect the Black/Yellow stop wire AT THE POWER PACK and retest. If the engine’s ignition sparks, the stop circuit
has a fault. Check the key switch, harness and shift switch.
2. Disconnect the Yellow wires from the stator to the rectifier and retest. If the engine now has spark, replace the rectifier.
3. Check the cranking RPM. A cranking speed of less than 250-RPM will not allow the system to spark properly. This can be
caused by a weak battery, dragging starter, bad battery cables or a mechanical problem inside the engine.
4. Inspect and clean all engine and ignition ground connections.
5. Check the stator resistance and DVA output as follows:
Black Stator
WIRE READ TO OEM RESISTANCE CDI RESISTANCE DVA (Connected) DVA (Disconnected)
Blue Blue/White 3250-3650 500-600 180-400 V 180-400 V (*)
Red Red/White 75-90 28-32 25-100 V 25-100 V (*)
Red Stator Kit
WIRE READ TO OEM RESISTANCE CDI RESISTANCE DVA (Connected) DVA (Disconnected)
White/Green Green/White 500-700 500-600 180-400 V 180-400 V (*)
Blue Engine GND OPEN OPEN 180-400 V 180-400 V (*)
(*) This reading can be used to determine if a stator or pack has a problem. For instance, if you have no spark on any
cylinder and the stator’s DVA reading is low – disconnect the stator wires and recheck the DVA output. If the reading stays
low – the stator is bad. If the reading is now within spec – the pack is bad.
6. Check the center hub triggering magnet in the flywheel. A loose magnet can cause this problem.
7. Check the triggering and charge coil flywheel magnets for cracked, broken and loose magnet

 

[capeape56]

Re: 40 force no spark low voltage

Thanks for that. Lots of good info to work with. Wish me luck.

 

[capeape56]

Re: 40 force no spark low voltage

Finally getting around to trying to sort this out - been away. One question regarding terminolgy - what does the term DVA refer to?

Thanks

 

[capeape56]

Re: 40 force no spark low voltage

what does your term DVA refer to?

Thanks;
CapeApe 56

 

[Coltrickle]

Re: 40 force no spark low voltage

It's a voltage adapter used with a multimeter to give you a peak output reading.. Very few meters can read a dva output so you have to buy or make your own adapter for about 5 bucks.. Use the search bar and look for "how to make a dva for multimeter" exactly like I wrote it.. Scroll down the page and there is a lot of knowledge in this thread!! Good luck