Mercury 9.8 Looking for spark

[Beek14]

I have a 1975 9.8 merc that I've been working on lately that was sitting around for a while. It has good spark to the bottom cylinder, but the top doesn't spark hardly at all. Every once in a while I could see a very little orange spark come off of it, so I thought maybe it was the ignition coil (in line with the spark plug). So I replaced it with a new one, and still no change in spark. Now I'm thinking it might be a stator coil (which there are only two on this model) so I'm thinking of replacing them both (they're only about $15 each so why not right?). I know it's not the ignition cable assembly (the cable that holds the spark plug and connects to the coil) because I switched them around to check and same thing, spark on same coil. So, I just wanted to know if anyone thinks it could be something otherwise than the stator coils. Let me know, Thanks.

 

[Laddies]

Re: Mercury 9.8 Looking for spark

It's more likely to be the switch box as the ciols you speak of are the high and low speed windings and effect both cyls. Here's a test for then and the system.

 

[Beek14]

Re: Mercury 9.8 Looking for spark

I put a new switch box on today and that did the trick. Thanks laddies

 

[MrVox]

Re: Mercury 9.8 Looking for spark

It's more likely to be the switch box as the ciols you speak of are the high and low speed windings and effect both cyls. Here's a test for then and the system.

I have Spark problem on my 9.8 HP Mercury, the problem just coming upp, i have replaced spark pluggs and no spark all, i have question how know if it's condensatorn or some other things are broken ?

how can i replace the kabel to sparkpluggs or i need to replace coil and cabel ?

 

[green4themoney]

Re: Mercury 9.8 Looking for spark

you take the boot off connecting to the coil then you simply pull the wire down off from the coil and you can buy the ignition wire kits at oldmercs.com

 

[MrVox]

Re: Mercury 9.8 Looking for spark

how? i try to screw wire out but nothing happens,

 

[MrVox]

Re: Mercury 9.8 Looking for spark

i figerout how i remove ignition wire but no problem there, how can i test if my condensator is broken ? if this is broken no sparks on any sparkpluggs ? right ?