82 omc 70 with spark at only #2

[Docja]

I have an 82 Evinrude 3cly 70 cd3 ignitionn that's run great for years. It now will start and idle but stalls as soon as I throttle up. There's great spark at #2 but none at 1 or3. Wires not the prob. I also put a meter on the coils. My meter is a little wacko,so I can't tell you the true value, but all three coils read the same so I'm assuming it's not them. Grounds are all good. Does this mean the cd unit is bad? Any other test suggestions? If it is the cd is there a source for one that won't cost a fortune?

 

[Waterbugtoo]

Re: 82 omc 70 with spark at only #2

That usually turns out to be a bad pack, but you should check stator and trigger before replacing it.

 

[Docja]

Re: 82 omc 70 with spark at only #2

What is a trigger? Would I still get that good spark on#2 if it +/or staor are bad?

 

[ob]

Re: 82 omc 70 with spark at only #2

Swap two leads around from power pack to coils and see if the good spark cylinder moves.If so it's probably the powerpack.If not swap the known firing cylinders coil with one that isn't and see if coils are culprit.

 

[Docja]

Re: 82 omc 70 with spark at only #2

Thanks for tips. Coils all work when fed by jumper from power pack #2 lead. How do I test power pack vs. sensor coils? The manual seems to say the sensor just tells the pack when the timing mark comes around and the pack then starts with #1 and cotinues firing order. Can anyone explain how te pack would fire just #2? Also.. the manual gives test procedures with special meters. Can a regular multi-tester be used? Can anyone translate Clymer's brand-based tests for sensor coils/power packs into regular multi-tester Instructions?

 

[Trent]

Re: 82 omc 70 with spark at only #2

Regular multi-meter can be used to get you in the ballpark. Set meter to AC scale. Multiply the reading you get by 1.414