Ignition point

[trita306]

I have no spark in the bottom plug of my 72 9.5. After inspecting the ignition points I noticed that one of them is completely closed and there is no gap. I tried to adjust it with the screw and at the farthest setting it is still touching. Anyone know what to do in this situation?

 

[nwcove]

this may sound like a stupid question, but i will ask .....are you setting the points with the rubbing block at the high point on the cam? other than that, have a close look at both rubbing blocks....are they the same thickness? ie ....is the rubbing block on the set of points in question noticeably thinner than the other set?

 

[trita306]

Pardon my ignorance, I am fairly inexperienced in this area. The points look to be identical, one is just touching and the other has a gap. I am not sure what 'setting the points at high point of the cam' really means. This could be normal, I am just trying to diagnose the problem and learn along the way. Where should I start in diagnosing exactly what is wrong when there is no spark from one of the boots.

 

[kbait]

You have a 'universal magneto'. Read through this (6hp has same setup as your 9.5): http://forums.iboats.com/forum/engi...45086-1972-6hp-evinrude-has-no-spark?t=531940

Good luck!

 

[nwcove]

Pardon my ignorance, I am fairly inexperienced in this area. The points look to be identical, one is just touching and the other has a gap. I am not sure what 'setting the points at high point of the cam' really means. This could be normal, I am just trying to diagnose the problem and learn along the way. Where should I start in diagnosing exactly what is wrong when there is no spark from one of the boots.

lets forget about the gap for a minute and ask what work has been done to the ignition since youve owned the motor? new coils, points, condensors, wires and boots??

 

[Tim Frank]

Did you turn the crankshaft to check this or are you saying that one set of points was open, but the other was closed?
That is normal....one set opens 1/2 revolution after the other...there is a lobe on the crankshaft that does this.

 

[Rick.]

http://forums.iboats.com/forum/engi...ge-coils-and-set-points-on-old-omc-s?t=294072
Have a look at this for good pictures and descriptions of your ignition including points and cam. Best of luck. Rick.