Force 125 89. no spark on one cylinder

[jerryjerry05]

Re: Force 125 89. no spark on one cylinder

Trigger is different.Stator might be the same.Depending on the year.Early 89/91 150 stator will fit, newer,possibly not.The 91+ has Mercury parts.
The way to tell is count the trigger leads,should be 2 leads per cylinder.
What model and serial# for the 150???
I still have the stuff you asked about 6months ago??? J

 

[Jiggz]

Re: Force 125 89. no spark on one cylinder

I am writing again after 6 months because I still did not solve the problem with my force 125. There is no spark on one cylinder. I replaced power module and it was good module. So that was not the problem. Now I am planing to replace trigger or stator. I have one old motor for parts but it is 150hp Force 5 cylinder. Does it have the same stator and trigger like my Force 125 ? Thanks

It cannot possibly be the stator because there's no way you can have spark on #4 had the stator been bad because there is only one set of wires providing power to the #2 CDM. Maybe the trigger.

 

[CharlieB]

Re: Force 125 89. no spark on one cylinder

Did you download the Ignition Troubleshooting Guide from CDIElectronics?

Do you have a DVA meter or a DVA Adaptor and a volt//Ohm meter?

The triggers needs to be tested to verify output to EACH switchbox.

If you do NOT have the DVA you can test trigger output using a flashlightbulb, the trigger puts out just enough voltage to flash the bulb, check each trigger as I expect you will find #3 dead. When you do, strip both wires back a quarter inch and retest.

 

[shakazulu]

Re: Force 125 89. no spark on one cylinder

So you think it is a trigger, not stator? Because there is no spark on only one cylinder always. I will try to strip wires from trigger and try again and check them with flashlightbulb.

@JerryJerry, any news about parts and shipping price?
Thanks

 

[jerryjerry05]

Re: Force 125 89. no spark on one cylinder

Sorry about not getting back to you.
Try this,unhook all the wires and install new connectors.
I just spent a lot of time trying to figure out a supposedly good system.
The wire connectors LOOKED good but under the rubber seal it had broken.
Will go to the post office tomorrow.
What colors are the leads from the stator??
I have 2 and need to make sure I have the right one.J

 

[shakazulu]

Re: Force 125 89. no spark on one cylinder

After some playing with modules and wires I made some switching and put new module I got from USA for 1st and 2nd cylinder and old module ( the one that mechanic took off) on 3rd and 4th cylinder. And Bingo! all 4 cylinders work! I really am not sure why they work now and why 1 cylinder did not work before. So I have fixed main problem.

But not totaly. Boat goes max. 22-23 MPH and before it went 35 MPH.

I think that 3rd and 4th cylinder have weak electrycity or something ( they are connected to old module) .

When motor is running on idle I pull plug of 4th cylinder and motor continues to work but slower.
When motor is running on idle I pull plug of 3rd cylinder and motor continues to work but slower.
When motor is running on idle I pull plug of 1st cylinder and motor turns off.
When motor is running on idle I pull plug of 2nd cylinder and motor turns off.

All plugs have electrycity now but I think 2 cylinders are weaker. Which ones?

I am thinking about switching places of theese 2 modules to see what happens.

Any ideas? Carburetors and timing are synced good.

 

[jerryjerry05]

Re: Force 125 89. no spark on one cylinder

What's compression?
Do the switch.

 

[Jiggz]

Re: Force 125 89. no spark on one cylinder

The best way to troubleshoot now is to measure spark voltage or at least the CDM voltage output to the coil with a DVA voltmeter. You've spend too much time trying to isolate the problem but now you have sparks on all four but not sure if it's putting out the right voltage. DVA adapters are available on ebay or other electronic stores. Google.

 

[shakazulu]

Re: Force 125 89. no spark on one cylinder

I switched cd modules ( replaced all input wires from Stator and trigger and replaced output wires 1st and 2nd coil to 3rd and 4th coil. And problem stays the same. Still can not get the power it used to have before. And on idle by pulling 1st and 2nd plug motor turns off and by pulling 3rd and 4th cylinder it doesnt turn off, continues to run but slower. Is it trigger or stator ? Yes I know it would be best to test it with DVA voltmeter but I don't have it at the moment. I have standard one for usual electricity.

Do I order stator or trigger on ebay or test more?

 

[CharlieB]

Re: Force 125 89. no spark on one cylinder

Since there is NO RETURN on electrical parts it is ALWAYS ADVISABLE TO TEST, test again, and retest once more to be SURE of the problem.

Have you switched the position of the coils to rule out the possibility of weak coils on 3 & 4?

Next, switch the stator wires between the upper and lower switchboxes. The stator is actually TWO sets of charging coils, one set for each switchbox. You want to see if the intensity of the spark switches to the other two coils.

Have you done any spark GAP tests? Looking to see how far/large of a gap the spark will arc across? A good ignition should arc a hot blue spark across at least a 7/16 inch gap. If your arc on 3 & 4 is orange/yellow it is a sign of low voltage from the stator.

This needs to be PROVEN, never assume anything as you can spend a LOT of money before replacing to correct part(s).

 

[shakazulu]

Re: Force 125 89. no spark on one cylinder

Replaced blue and yellow wires from stator and nothing changes. Boat still goes 23-24 MPH . Before 35.

Since all cylinders work I suppose that I can not suspect on trigger. So stator is main suspect?

What if it is not the electric problem, should I check fuel pump diphragm? Check carburettors is one of them clogged? Can I suspect in fuel problem?

I am working to make home made DVA multimeter to check electric wires

 

[jerryjerry05]

Re: Force 125 89. no spark on one cylinder

Compression?

 

[shakazulu]

Re: Force 125 89. no spark on one cylinder

Compression is good on all cylinders

 

[CharlieB]

Re: Force 125 89. no spark on one cylinder

Replaced blue and yellow wires from stator and nothing changes. Boat still goes 23-24 MPH . Before 35.

Since all cylinders work I suppose that I can not suspect on trigger. So stator is main suspect?

What if it is not the electric problem, should I check fuel pump diphragm? Check carburettors is one of them clogged? Can I suspect in fuel problem?

I am working to make home made DVA multimeter to check electric wires

If you have a weak side on the stator AND you have switched stator leads from one switchbox to the other, DID YOU TEST SPARK GAP?

IF......... there is a problem with the stator you need to PROVE IT. Yes it is possible you have a problem and switching that problem from the top two cyl's to the bottom two cyl's the boat will run the same weak manner.

HOWEVER, because you need to PROVE THE FAULT without assuming because of that NO RETURN thing, you need to test the spark intensity over a measured gap, see the color, or use a DVA meter and MEASURE the voltage, only then will you PROVE and KNOW for a fact what is or is not wrong and can make an informed decision whether or not to spend that much money on a stator AND KNOW IF that will improve the motors performance.

But if you got a lotta money and just have to spend it................................