after hooking up MSD can't kill it

[h2odesperado]

After hooking up my msd, with advice from both MSD and Paul, I cannot get the motor to shut off with the stop button. Swapping in a stock CDI, I can kill it right away. The kill switch is the white and black wires correct? The black is going to ground and the white is going to the female connector on the msd. I cannot figure this out. Anyone else have this problem? The ski fires up and runs and sounds real healthy, I just can't shut it off.

 

[Kaveman]

which electrics are you using 6r7, 61x, 62t? Check ALL 5 ground eyelets in the electrical box to ensure each is grounded. Make sure that the black wire that is loosely heat shrunk to the orange wire out of the enhancer is going to the coil.

 

[Kaveman]

Also did you buy it new or used. If it's used that could be why the previous owner bailed on it.

 

[h2odesperado]

6r7, I'll go over the ground eyelets again. It worked in the previous boat, I actually rode it.

 

[Mouthfulloflake]

just turn your idle down, I would do that anyway.

if the grounds check out though, and for sure your kill switch is making the circuit, there is possibly an open inside the msd cdi.

 

[h2odesperado]

yup I'm almost sure its the enhancer now :banghead:

Is there any way to test a CDI? Short of puttin it in another boat?

 

[Mouthfulloflake]

Not that ive ever heard of.

If you dont want to run your idle down low, Ill buy it from you for cheap.


:biggthumpup:

 

[h2odesperado]

alright, new idea here. I believe my stock cdi is dead, but in the beginning of the season it was fine. This ebox and all electronics were run last year with an enhancer in place of the cdi that is in it now. My question is:

The spark plug boots on this boat are the resistor type...
http://www.parkeryamaha.com/index.asp?PageAction=VIEWPROD&ProdID=17206

Would these kill my stock cdi or cause less than satisfactory performance? I know newer sj's run resistor plugs, and some people even recomend them for MSD applications, but in stock 6m6 applications resistor plugs are not recomended. I'm just tryin to figure out why my ski is dying.

 

[Matt_E]

The resistor plug recommendation has come from Yamaha in recent years. I don't know why - their electronics did not change.

I run non-resistor plugs in my MSD TL, and it runs fine.
I don't think that's your problem.

 

[njfl]

yup I'm almost sure its the enhancer now :banghead:

Is there any way to test a CDI? Short of puttin it in another boat?

Find someone on here with an Enhancer and check for resistances/opens/shorts between various wires on the two units. Look for gross differences, like on the known-good unit, two wires are open, and on teh suspect unit, they are shorted. That would be conclusive information that something is not right with your Enhancer.

 

[Sanford]

The resistor plug recommendation has come from Yamaha in recent years. I don't know why - their electronics did not change.

I run non-resistor plugs in my MSD TL, and it runs fine.

The only time I had to run resistor plugs on my SJ is when I was running H2O injection (on B-pipe). The non-resistor plugs would screw with the solenoid trigger points.

 

[keefer]

When you run resistor plugs or resistor caps you eliminate a lot of the RFI that is generated by the high voltage in the plug wires. The resistors dampen this effect and reduce interference with things like water injection modules and digital ignitions. To be most effective in reducing RFI you have to run the high quality silicone core plug wires. Some digital ignitions require specific lengths of wire to get the proper resistance when using these type of noise suppression wires.

 

[keefer]

After hooking up my msd, with advice from both MSD and Paul, I cannot get the motor to shut off with the stop button. Swapping in a stock CDI, I can kill it right away. The kill switch is the white and black wires correct? The black is going to ground and the white is going to the female connector on the msd. I cannot figure this out. Anyone else have this problem? The ski fires up and runs and sounds real healthy, I just can't shut it off.

It might be something as simple as a bad wire. Just for laughs you might try checking the continuity of the wire that connects to the stop switch from the female connector down to right before it goes into the MSD block. I would do this with an ohmmeter by attaching one lead to the female connector and use a sewing needle on the other. Push the needle into the wire close to where it goes into the MSD block and you should get a reading of 0 ohms. If you don't then check the crimped connector first then move the needle up the wire until you get a reading.

 

[Mouthfulloflake]

just dont forget to seal the hole in the wire with something, electrical tape or goo or something.

in my experience the weak point of the enhancers is the waterproofness.

:biggthumpup:

 

[skibums4life]

Hey guys it's my msd, it ran great in the square I pulled it from that I rode in daytona I'm a thousand percent sure thats not the problem. What made no sense was his ski was running fine first time out and then he had trouble with the injection of the headpipe on a bpipe so we cleaned those out that worked then next run out everytime it would use the overheat sensor and stop revving at 3,000 rpms when this did nothing the first time out. So he pulled the temp sensor off it was still doing it so he threw my msd in their and this problem started up. Something has to be shorting somewhere for this to be happening. The MSD is like new that is in it. Maybe try another cdi and see what happens? It doesnt make any sense that that msd would be the problem.

 

[Kaveman]

Swapping in a stock CDI, I can kill it right away. The ski fires up and runs and sounds real healthy, I just can't shut it off.

According to the original post, IF the only thing changed was the Enhancer with a stock cdi to solve the problem, then either the Enhancer or a wire is bad. It is possible that in swapping the ignition unit that an internal break in a wire was inadvertantly connected. My experience with MSD has not been anything to brag about. Those things can last for years or days with no apparent reason.

Bum thanks for the additional info about the pre-existing issue.