1991 force 9.9 ignition coil

jcampbe6

Cadet
Joined
May 1, 2011
Messages
8
One of my ignition coils went bad on my 91 9.9 force and I can not find one anywhere!!!! It is the electrical ignition system, (no points or condensers) the ignition coil is light blue with a black and grey wire. It is made by prestolite and it is stamped with a 4592 on the bottom. I checked on this site and they offer a new type ignition system that replaces mine since it is obsolete. Do I have to change flywheels? Or anything else if I buy that? I've checked all around the country at boat junkyards and online just about everywhere. They all say "good luck"
 

jcampbe6

Cadet
Joined
May 1, 2011
Messages
8
Re: 1991 force 9.9 ignition coil

Gerry,
That almost looks like it but my wires are gray and black. I was told not to use the one with the blue and brown wires. Unfortunately I don't have the s/n because it wore off the sticker on the leg. The motor was my uncles and he bought it in 1991.
 

jcampbe6

Cadet
Joined
May 1, 2011
Messages
8
Re: 1991 force 9.9 ignition coil

No welch plug there. Is there any other places they would stamp the s/n on the motor anywhere?
 

fishrdan

Admiral
Joined
Jan 25, 2008
Messages
6,989
Re: 1991 force 9.9 ignition coil

I have an 88 Gamefisher (same as Force) 7.5HP (detuned 15HP) and had the same problem, 1 coil died. The "BIM" coils are NLA so you can't buy them from Mercury anymore, Mercury purchased Force and sells their parts.

2 solutions;

1- Contact Standard Magneto and see if they have a replacement BIM coil for your outboard.
2- Buy a CDI ignition upgrade kit and replace the entire ignition system. The kit is available right here at Iboats for $150-200, kind of pricey, but,,, what you going to do...
 

jcampbe6

Cadet
Joined
May 1, 2011
Messages
8
Re: 1991 force 9.9 ignition coil

So I ordered an ignition coil online. Got it today and put it in. Well now I have no spark what so ever on either plug?. But when I put the old one back in I have spark in the good coil and a weak spark in the old coil. Any suggestions? I am lost now, not knowing what to do next.
 
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