Coil problems?

[pieman]

I'm hoping maybe someone out there can shed a little light on this issue for me. I have a 115 V4 1192 Johnson. My outboard will sometimes bog on me. I have found that if I mess with the spark plug wire connecting to the coil on the top left side it re-gains power. Any help is appreciated. Gracias.

[pieman]

1992 Johnson oops.

[Gramps]

Any cracks, kinks, or rot to the coil wire?

If a coil was going bad, it most often is intermittent which your sounds to be. Coils appear to be around $30 online and plug wires $10, if you want to start replacing parts, I'd go there first.

[pieman]

Any cracks, kinks, or rot to the coil wire?

If a coil was going bad, it most often is intermittent which your sounds to be. Coils appear to be around $30 online and plug wires $10, if you want to start replacing parts, I'd go there first.

Thank you, will do.

[Robalo]

Sounds like Plugwire since your jiggling it makes motor run smooth. You can easily check coils-start motor (while running water through engine) and use either rubberized glove or plastic type or insulated pliers and start by unhooking plug wire one at a time and see if motor acts up-if motor acts up and almost dies, re-attach that plug wire and move to next. If motor doesn't start to sputter and try to die, the coil to that cylinder is bad-repeat for each cylinder-usually only 1 coil goes bad.

[pieman]

Sounds like Plugwire since your jiggling it makes motor run smooth. You can easily check coils-start motor (while running water through engine) and use either rubberized glove or plastic type or insulated pliers and start by unhooking plug wire one at a time and see if motor acts up-if motor acts up and almost dies, re-attach that plug wire and move to next. If motor doesn't start to sputter and try to die, the coil to that cylinder is bad-repeat for each cylinder-usually only 1 coil goes bad.

Thanks Robalo!

[pieman]

An update that might help others. Took my rig to a local marine shop (Alvin area) Compression showed 100,100,100, 90 the guy said I had a flat spot on my 4th cylinder piston causing bad compression.... he said I needed a new power head.......$3000 to start off....!!!!!??? I said forget that , no way I'm spending that on a 1992 outboard. Paid the guy his $100 fee for the bad news and went on my way. 95 compression didn't seem so bad to me so I dropped it off at buddies house and he agreed so he cleaned the power pack coil connections, cleaned and taped up any corrosion spots he saw ( green corrosion many spots) and bingo! NO MORE bogging or stalling. I am ordering a new power pack today $95. Check the simple thing first. Cant understand how a shade mower mech can find things a cert marine mech cant........

[dbarham]

Take it to Evans marine!!!!!

[pieman]

Take it to Evans marine!!!!!

Yep, I should have. Next time fo sure!!!!

[dbarham]

I bet I can guess the shop in alvin too

[Robalo]

Pieman:

My 1986 90 hp Rude did the same thing. If #4 Cyl was "bad", you'd not be "intermittent"-that Alvin Mechanic is a dumarse.

On those old bullet-proof rudes/johnsons, 99% of the time it is a bad coil or power pack-extremely simple fix and cheap. Glad your buddy figured it out.

[SCHU]

Glad to hear you figured it out. thanks for the warning!

[plugger]

I'm envious of you guys who are mechanically inclined . I never had the need , inclination , or desire .

[Gilbert]

Pieman:

My 1986 90 hp Rude did the same thing. If #4 Cyl was "bad", you'd not be "intermittent"-that Alvin Mechanic is a dumarse.

On those old bullet-proof rudes/johnsons, 99% of the time it is a bad coil or power pack-extremely simple fix and cheap. Glad your buddy figured it out.

yup. my dad always had a spare power pack on the boat.