1991 Force 50 Ignition Testing

[gfinale]

I have a 91 Force 50hp. I know there is a way to switch a couple of wires from the cd unit or coils so that you can use the other coil on the other cylinder. In other words I know the boat is running on only one cylinder and I'm trying to run it on the other cylinder using the working coil. A mechanic has already done but I could not see what he did and want to go over it myself. Can anyone explain how to do this properly?

 

[gfinale]

Re: 1991 Force 50 Ignition Testing

Call the coils A and B and the cylinders 1 and 2. Normally A is on 1 and B on 2. It is A on 1 that will currently/normally run the engine.<br /><br />I figured out how to switch the coils and a shop confirmed they can be switched for testing. So, I replaced coil A with B so that B is on 1.<br /><br />When I do this it will not run using coil B. This would lead me to think the problem is coil B, only using coil A on the other cylinder 2 will not start the engine either. This would seem to say it is the cd module since I'm using the for sure working coil.<br /><br />Since one test says coil and the other says cd module I have not yet determined which component is the culprit for some reason. Maybe my testing procedure is flawed. <br /><br />Can anyone comment or suggest a better way of testing these components to determine whether each is good or bad?

 

[gfinale]

Re: 1991 Force 50 Ignition Testing

Tests in manual didn't seem to work. I think I need a better (digital) ohm meter. So I took a chance and bought a coil. Wasn't that so then I bought the cd module. It's all working great again now. <br /><br />Can't believe I found a marine that carries used parts for my motor here in Canada! Since the price used was so cheap it didn't cost that much even though I bought a coil I didn't need <br /><br />Anyway, thought I'd document what happened here in case someone else has a similar problem.

 

[duck-n-pond]

Re: 1991 Force 50 Ignition Testing

Out of curiosity, how much did the parts cost (if you don't mind)?

 

[gfinale]

Re: 1991 Force 50 Ignition Testing

I bought the coil used for $70ca which is $51us and the cd module was $175ca which is $128us. After hearing new cost of $468ca for cd module and $140ca for coil had to change underwear then went looking for used!

 

[duck-n-pond]

Re: 1991 Force 50 Ignition Testing

I guess you did look for used, I will have to do the same. $468....crap.