1985 120 v4 - CDI?

[GeeTee]

Was out in the bay yesterday, had to get a TOW home by a Jon Boat with a 40 horse on it - i took hours out of their fishing time to assist me. Thank goodness there are "good guys" out there or i would have had to use my trolling motor to get to the ramp.

I did some troubleshooting, no fire, batteries are fully charged every now and then it would seem as if it wants to fire but doesnt. This happens for a split second then goes away. I replaced spark plugs with new ones as older ones seem to be a little fouled. Still the same issue. I then removed the spark plug wire from each cylinder and tried arc against the engine to check spark, nothing. Fuel pump works too, i tested that. Im thinking its the CDI unit, or is this indicating its the stator?

How to be sure?

 

[boobie]

Go to cdielectronics.com for good trouble shooting procedures. You can also pull the black/yellow from the pack. This eliminates the boat wiring harness.

 

[GeeTee]

Boobie - i forgot to feedback - i followed your advice, pulled the black and yellow and boom, she started right up. Dismantled the ignition/throttle housing and inspected each wire. One of the wires had rubbed through and made a short on the unit. Repaired this and away went the problem. I must however add that in my infinite wisdom i decided it was a power pack prior to troubleshooting, so now at least i have a new power pack from CDI ;-)

Thanks for the assistance.

 

[boobie]

Thanks for the feed back.......