1990 omc looper 225 with weak spark

gabby198

Cadet
Joined
Jul 13, 2011
Messages
6
New to this board, looking for any help.

I have a 1990 OMC 225HP Looper.

While out one day I lost throttle. I took it apart and saw that I must not have tightened the clamp down enough after my last adjustment. I put it back, but after this we were not able to get the thing to fire up again.

After getting towed home, I saw we had zero spark on all cylinders. So I replaced the powerpack. That gave me a very weak spark. I tried new champion spark plugs and gapped them at .030, still no luck.

I disconnected the kill wires, the yellow wire from the stator, and checked all resistances and voltage. Everything checks out. I even get a nice 150-200VAC while cranking from my brown to brown/yellow wire - which is why I now believe the stator and flywheel and magnets are fine.
The coil connections look nice and the spark plug wires look fine.

I do have spark. It is a very weak yellow spark, not a nice blue one you would expect to see. The plugs get wet easily and I can get the engine to start on ether but cannot get it start otherwise. I have charged the batteries as well - so I there is enough juice to start it.

I think spark dwell timing maybe got knocked off? Or a trigger problem (although I get a pukse)? Or a ghost?

Sorry for the long post. But there are lots of details.
 

HT32BSX115

Supreme Mariner
Joined
Dec 8, 2005
Messages
10,083
Re: 1990 omc looper 225 with weak spark

Howdy,

Welcome to iboats!

This is the OMC I/O, Inboard Forum......I could be wrong but I believe you might want the Evinrude Johnson Outboard forum.

Maybe a MOD will move it for you!


Cheers,


Rick
 
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