force 35h.p. bad c.d.i?

[st. croix valley]

I am new to to both the I boat community and chat boars,Ihope i'm going about this the right way. I have a 1989 force 35 h.p. outbaord hooked up to a grummen 24' pontoon that was given to me by a widow who wanted it out of her yard. The motor is super clean. It has about 120 lb. commprssion on each cylinder and I have stong spark comming forom the stator, I have no spark at all comming out of either coil. I have replaced thr c.d.i. with a used one I bought at a place that recycles outboard parts, still no spark at the coils. Is there anyone out there that can give me any clue on how to test the c.d.i. or what my next diognostic test would be?
Thaks st. croix valley.

 

[maxum247]

Re: force 35h.p. bad c.d.i?

Nice find!

If your motor uses a terminal block on the engine that the wiring connects to with screws, check all ground wires to be certain they are grounded properly other wise a no fire situation can occur, sometimes it takes more than one try to get them to ground correctly.

If your motor uses plugin style connectors to make the wiring connections check the plugins carefully to be certain that the connectors aren't loose or broken inside the sleeves at the crimps.

Easy check to do, swap coils and see if one now fires. One half of the CD module can be bad or you could have a bad coil on a cylinder or spark plug on one cylinder or both, doesn't cost anything to try it and rule out these items as the problem unless you've already done that.

If you use a multimeter it must be capable of reading peak voltages; a conventional volt-ohm meter (VOM) will not work. Good Luck!

 

[tashasdaddy]

Re: force 35h.p. bad c.d.i?

also if the coils are cracked, 99% chance they are bad.