no fire to coil

[skynyrdcat]

93 mercruiser jet drive (90hp).

No fire,
Bought a manual for trouble shooting and found that the stator resistence (low speed) does not register at all on my ohm meter. High speed side is OK.
There is an adapter in the boat for the "red stator" but only the ground wire is hooked up. This doesn't make sense because the other 3 wires are just laying in the bottom of the boat.
1. Would this make the stator resistence be bad?

2. The next check also shows the switch box to be bad (no power to coils). Would this be caused by the stator?

3. Can you tell me where the other 3 wires of the red stator adapter should go? The manual doesn't show the adapter, I'm assuming the previous owner replaced the stator w/ a red one and maybe I had a wire come loose.

I'm looking at about $500+ (stator and switch box) so I want to get other opinions before buying parts.

Thanks in advance

 

[WillyBWright]

Re: no fire to coil

Is the stator red? You should be able to see it peeking out under the flywheel. What colors are your loose wires?
1-no
2-maybe
3-Yellows are for battery charging and attach the the regulator/rectifier, green/whites are for making spark and go to a long black skinny plactic thing. Then there's a blue one out of the long skinny thing that goes to the switchbox (red terminal is unused).

There are two wires which are probably not used on your setup. A brown w/ white stripe for a trim gauge (outboards) and a tan one usually used for a temp gauge.

 

[WillyBWright]

Re: no fire to coil

If everything looks right and you still have no spark, try putting the blue wire on the red switchbox terminal.

Caution ... The red in the ignition circuit must not be crossed with the red of the charging circuit. Bad choice of color to the switchbox. The red ignition system wire is high AC voltage and the other red is 12v+ DC. A red stator doesn't have a red wire, so you may have nothing to worry about in that regard. Just don't think you need to run a red wire from the 12v side to the red terminal of the switchbox. It'll poof the switchbox..

 

[skynyrdcat]

Re: no fire to coil

Thanks Willy

I'll give it a shot!

 

[skynyrdcat]

Re: no fire to coil

The stator is black!

When I saw the adapter I assumed the previous owner replaced the black one.

I'll go ahead and get a new one