9.9 with no spark

[eo]

Hi
I have some electrical problems on a 9.9 belgium make with serial 09783209, i think this is a 1993 mod. There are no spark on both plugs. I mistake the switch box or stator to be the problem. By messuring the wires out of the stator when crancking I get about 5 VAC, is this correct or is it supose to be 12 VDC?
The trigger signal has a value that does a fast unreadable change in my ohm-meter when crancking, correct?
The stop switch seems to be ok.
Any hot tips?

 

[Laddies]

Re: 9.9 with no spark

You can't read voltage on your system without a DVA so even though it's not as accurate a test chek with your OHM meter. disconnect the black/yellow wire from the kill switch from the box, if you have continuity in the trgger and stator it's probably the box if you need the specs for the system let us know.

 

[eo]

Re: 9.9 with no spark

You can't read voltage on your system without a DVA so even though it's not as accurate a test chek with your OHM meter. disconnect the black/yellow wire from the kill switch from the box, if you have continuity in the trgger and stator it's probably the box if you need the specs for the system let us know.

If I disconnect both wires to the stator and messure, there is no continuity. Broken? With the stator connectet to the box there is 4,7 Mohm. There is also a yellow and a grey wire from the stator thats going to a connection terminal, is this for aux equipment? (lanterns etc). This one has continuity, can I use this to feed the box with power? Or could I try with a 12V battery?

Yes thanks I would like to have the specs for the system.

 

[Laddies]

Re: 9.9 with no spark

Hope this helps.

 

[eo]

Re: 9.9 with no spark

I have a intrument thats messures DVA and the value is far away from spec(2-3V).
The resistance on stator: black/yellow-gnd 2,2Mohm. black/white-gnd 134ohms. The switch box I have is 339-7452A13, not the same as the one on the spec. Don't know if that makes a difference?

 

[Laddies]

Re: 9.9 with no spark

Thats a miss printed number and the right test for your enigine. Here's a different test for the stator if you will feel better with it. I think you also need to check the OHM value for your meter as I do not under stand the M factor behind the 2.2 it could be the same as 2200 ohms.

 

[eo]

Re: 9.9 with no spark

Thanks,
Mohm is mega ohm. 2,2 Mohm = 2200 kohm or 2200000 ohm. I think that indicates a broken coil with no continuity. Disconnected the black/yellow wire from the box and there is no continuity to coil. No continuity between black/yellow and black/white either.

Is it possible to connect the switch box to a 12v battery for testing?
Nice to know if it works well before I order spearparts.

Those 2 wires grey and yellow comming from a separate coil at the stator, are they for powering aux equippment?

 

[Laddies]

Re: 9.9 with no spark

The gray and yellow wires from the stator are charging alternator wires they can be used as a lighting coil or run through a rectifier to charge a battery. If you hook D/C current or the wrong voltage to the box you will probably need to replace everything as it will be toast.

 

[eo]

Re: 9.9 with no spark

What is the correct stator part number for this engine?
It seems to be a 10hp seapro not a 9.9.

 

[Laddies]

Re: 9.9 with no spark

86617a20

 

[eo]

Re: 9.9 with no spark

Thanks,
do you also have the part number for the switchbox?
Can't find any parts with the number i got for it..

 

[Laddies]

Re: 9.9 with no spark

Here's a link for your motor I can't link you to the page any more I think iboat may have put a stop on that. http://www.mercruiserparts.com/selectDocs.asp?doc_nbr=816399+90

 

[rotaxman]

Re: 9.9 with no spark

Hi
you mentioned that 339-7452A13 is not a valid part #, a misprint. Do you know which part # replaces it? or what the # should read? I have the same part # on my switch box.
A google search for this part # returns one result, this forum. this must be rare and of course I would have this rare part #. Motor is in Canada.

hopefully you can help. and thanks in advance.

 

[Laddies]

Re: 9.9 with no spark

That number is a valid number on other engines just a missprint on the sheet for 1979 to 96 2 cyl. engines.

 

[rotaxman]

Re: 9.9 with no spark

oh, my mistake.
do you know if the same switch box is used for all 9.9's between 86 and 96. All of my searches indicate this but my part # is never mentioned, every other # but never ending in 13. Unfortunately I do not have the serial # or model year. The fact that my motor and the one that started this thread are not from US is most likely why the part # never shows up anywhere.
I realize this a difficult question to answer but I would appreciate a best guess and if you know if the wrong switch box could damage anything. I found several switch boxes with the same wiring hook-ups, but my part # is not a match.
TIA if anyone can help me out

 

[Laddies]

Re: 9.9 with no spark

There were 2 boxes one the wires are attached and the other there are attached with nuts, I don't know which yours is so here's a link for the best manufacturers part numbers.
http://cdielectronics.com/AppGuide.aspx
Click on mercury and select the engine

 

[rotaxman]

Re: 9.9 with no spark

Thank you for taking the time to reply.
They have no record of this part # either but I explained that it's in Canada and I am waiting for a reply.
I will report back with my findings, maybe this can help someone else.
btw...it's the one with wires, 5 bullet connectors, 8 wires total, black/yellows and black white, brown/yellow, brown/white, solid black and a green/yellow to one coil and a green/white to the other coil