Sea King spark plug

[bluehaze]

I’m looking to see if there’s a new spark plug that will work in my Montgomery Ward Sea King 3hp opposed twin. Model # 449 02332.
The original plugs are ” Wards 14 ” .
Any info would be appreciated !

[bill-mcnamara]

Also wondering about a recommended plug for a Sea King 1.0hp single.
The plug that’s in it is a J-11 which fires OK outside the cylinder, but not having much luck so far installed.

Also wondering about pre-start carb settings.

Bill.

[green-thumbs]

Champion J11 may not be the original heat range so a
“J” type in a different number may be what is called for. A compact
version of “J” may be needed if a spark plug cover is involved.
Spark plugs were made to sell under various store brands which mau be hard to find. Spark plugs are standardized. so far as physically fitting engine. A little comparison will verify which of the several standard size

Good Luck

edit
Spark outside cylinder but,, not under cylinder pressure is likely a low
voltage issue…it take higher voltage to jump gap in compressed air in
cylinder than in open air. Coils can have an internal short or ignition
lead insulation deteriorated or damage. the spark will jump gap or
spark plug in open air ,but, find the short an easier pathe when spark
plug is under cylinder pressure at or near TDC.
All I know about magnetos on old outboards is that they come covered
with crud. First you remove the crud. That seldom makes them work,
but, you have to start somewhere.
Try a spark plug that is known to work on another engine. Spark plugs, even new ones can be defective. Same for condenser.
I once almost pulled my arm off trying to start a snowblower with a new
spark plug of correct specification. On a hunch I put the old spark plug back in and it started with 1 pull. Go Figure. It generally is a good idea to install new spark plug before start of season for either lawn mower or snow blower…maybe so, but, don’t pitch the old spark plug until the new one is up and running.
Good Luck

• This reply was modified 4 years, 10 months ago by green-thumbs.
• This reply was modified 4 years, 10 months ago by green-thumbs.

[bluehaze]

Yes, it is one of the shorter plugs since it does have the spark plug covers.

All I can get out of it is an occasional pop. I cleaned and gapped the points, soldered on new plug wires and ends, and it had spark that would jump a 1/4 gap. The spark when leaning the plug on the cylinder looked ok, but sometimes didn’t seem to work. Same with a different plug.
The plugs were totally soaked when I pull them out, even after I closed the adjustment needle.
I had completely cleaned the carb, and the float does shut off the fuel, so not sure why it’s getting so much fuel. Maybe it’s because I’m pulling it over so much without it firing.
When I shoot a little carb cleaner in the cylinders or the intake, I still can’t get it to fire.

I figured I’d start with plugs, but I may have to test the coil and condenser.

Also, can anyone tell me what year it is?
( # 449 02332 )

[fifty20ne]

http://www.discount-marine-parts.com/ob_sea_king_1.html

[Buccaneer]

bluehaze wrote:

Yes, it is one of the shorter plugs since it does have the spark plug covers.

All I can get out of it is an occasional pop. I cleaned and gapped the points, soldered on new plug wires and ends, and it had spark that would jump a 1/4 gap. The spark when leaning the plug on the cylinder looked ok, but sometimes didn’t seem to work. Same with a different plug.
The plugs were totally soaked when I pull them out, even after I closed the adjustment needle.
I had completely cleaned the carb, and the float does shut off the fuel, so not sure why it’s getting so much fuel. Maybe it’s because I’m pulling it over so much without it firing.
When I shoot a little carb cleaner in the cylinders or the intake, I still can’t get it to fire.

I figured I’d start with plugs, but I may have to test the coil and condenser.

Also, can anyone tell me what year it is?
( # 449 02332 )

Maybe photos of your motor would help. It’s possible a motor made by OMC
or perhaps Thor. Are the spark plugs 14 mm or 18 mm or ??

Here a photo from a pamplet, year unknown. Is it similar to this?

Prepare to be boarded!

[Tubs]

bill-mcnamara wrote:

Also wondering about a recommended plug for a Sea King 1.0hp single.
The plug that’s in it is a J-11 which fires OK outside the cylinder, but not having much luck so far installed.

Also wondering about pre-start carb settings.

Bill.

A "Boathouse Repair" is one that done without having tools or the skills to do it properly.

• This reply was modified 4 years, 10 months ago by Tubs.

[need2fish]

I’m running a J-6 (c) in my Midget — from an ignition perspective, it fires great outside the motor, but everything must be scrupulously clean – points, plug, plug clip, armature and flywheel insides… I suspect I have a weak magneto.

Going back to the excess fuel situation: make sure that poppet valve is closing all the way.

[Author]

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