kill wire or a grounded engine problem

[steveh1970]

have a 40 hp 1989 force I think the motor might be ground or the kill wire engaged I have no spark? replaced the stator and trigger still nothing I'm lost.
It has to cdm coils, Has power coming from the stator from green white/white green, but nothing out of the coils ? I also replaced the ignition switch and nothing? Any ides the boat stop firing 7 miles up river and is at my dock, the boat ramp is way down river HELP PLEASE! Not sure how to test the kill or ground ?

 

[pnwboat]

Re: kill wire or a grounded engine problem

Not 100% sure but I think you might be off on your year. Do you have an electrical plug with 4 wires that goes to each CDM? If so, the kill circuit wire is Black with yellow stripe coming out of each CDM. If you follow those two kill circuit wires, they should be crimped together at a barrel connector which plugs into the wiring harness. To disable the kill circuit, unplug the wires at the barrel connector.

 

[steveh1970]

Re: kill wire or a grounded engine problem

Yes you right it's 98 my bad . Ok find the yellow /black wires I disconect them right there nothing still no spark. Not at the same time but I also disconnect the yellow /yellow off the rectfier and it still didn't fire?

 

[john from md]

Re: kill wire or a grounded engine problem

Make sure you 1) got an exact ignition switch replacement and 2) that you wired it correctly. Also, if you have a separate kill switch, check to see that it is still open and did not go bad. Also, make sure you didn't pop the circuit breaker under the cowl.

John

 

[steveh1970]

Re: kill wire or a grounded engine problem

I bought one from sierra that was a 6 post with a push in choke the gauges all work and when I turn it over the tack works fine the breaker is not popped wish it was. How do you check the stop switch to see if it's bad.

 

[john from md]

Re: kill wire or a grounded engine problem

Disconnect it from the switch.

While remote, you may have a short in the kill wires them selves back at the engine. You can remove them from the terminal board and try it.

It is extremely rare to lose two cylinders spark at the same time. Usually, when an engine starts running bad or shuts off it is usually fuel related.

John

 

[steveh1970]

Re: kill wire or a grounded engine problem

thanks for the info will try.

 

[pnwboat]

Re: kill wire or a grounded engine problem

If you still have no spark after disconnecting the Black/yellow wires at the barrel connector then you've more or less eliminated the kill circuit completely, so that's not the problem.

Double check to make 100% that you're not getting any spark.
The late model CDM ignition systems are much simpler to trouble shoot than the older systems with separate coils and CD Modules and terminal block connections.

Pull the 4 wire plug on the CDM for cylinder number 1 and see if you get spark on cylinder number 2. Then reconnect the 4 wire plug on number 1 and pull the plug on number 2 and check for spark on number 1. Let us know what you get. You may have one bad CDM that is preventing either from firing.

 

[steveh1970]

Re: kill wire or a grounded engine problem

will do ive read the manual from front to back just lost.

 

[pnwboat]

Re: kill wire or a grounded engine problem

One other thing I wanted to mention. The trigger on the CDM ignition systems is solid state. They went from the analog type coil of wire, to a digital Hall Effect transistor. The output voltage of the trigger for the old style trigger is .5 volts. The output voltage for the trigger on the CDM ignition systems is 1.5 volts. 3 times higher. If you do not have the correct type of trigger, it won't fire the CDM. Both types of triggers look identical on the outside. The only way you can tell is with an Ohm meter. If you read resistance, say around 52 Ohms, then it's the old style and is not the correct one. If you read an "open" then it's probably the new style.

 

[steveh1970]

Re: kill wire or a grounded engine problem

good stuff better check haven't been to the river yet but will check