can spark plug wires be replaeced on coils?

minocqa

Seaman
Joined
Jul 16, 2003
Messages
68
hi<br />i have a 1976 70 hp johnson<br />can the spark plug wires be replaced on these or do i need to buy the new coils?<br />thanks<br />DOn
 

R.Johnson

Rear Admiral
Joined
Sep 24, 2003
Messages
4,446
Re: can spark plug wires be replaeced on coils?

Replacing the wires on these coils whould be rare. Whay makes you think they need replacement? If the coil is out of spec., wire replacement would have little, or no effect.
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: can spark plug wires be replaeced on coils?

The plug wires simply unscrew from a sprial prong within the coil(s). To install a new wire, spray a little WD40 on it for lubricating purposes, then screw it back onto that sprial prong.
 

minocqa

Seaman
Joined
Jul 16, 2003
Messages
68
Re: can spark plug wires be replaeced on coils?

thanks joe<br />the wire just came out of the coil when i was changing the spark plugs i was sure if they could be fixed or not, my boat and motor is 28 years old i have never changed the plug wires before, the boat ran fine so i really didnt see any need in replacing them :p <br />does OMC sell new wires for them then or are there some that you recomend :confused: <br />please let me know<br />thanks <br />Don
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: can spark plug wires be replaeced on coils?

It's cheaper to make your own, and it's quite easy to do. Just take your time. Wire can be purchased in any length at most automotive parts stores and of course any marine dealership (usually).<br /><br />Just make sure that the inner wire cable is steel, not carbon or some other such substance. The following, taken from my database may be of some help.<br /><br />--------<br /><br />If you also need the spark plug boots and the spring terminals that connect to the spark plugs, purchase them from your local dealership (OMC Part #581027). This includes one boot and one spring connector. Price is about $3.25ea.<br /> <br />Purchase whatever amount of spark plug wire you need. Be sure to purchase the kind that has a steel twisted wire leading through the center of it....... not the carbon type plug wire that many automobiles now use.<br /> <br />Using your old plug wire, cut the new wire to a length about 3/4" to 1" longer. If you have no old plug wire, just make sure that the wire is longer than you'll need as you can trim the other end later.<br /> <br />The rubber boot, spark plug end.... With the wire cut to the length required, trim back 1/4" insulation again but do not solder tint the wires. Simply fan out the wires and fold them back against the insulation, cutting the excess off as explained above. Holding the spring wire terminal, estimate where the prong should be inserted so that the spring will be flush against the exposed wire. Hold the spring terminal away from the wires end (sideways) and insert the prong into the insulation and into the center wire, then swing the spring terminal in front of the exposed wire portion (makes a tight fit for continuity purposes).<br /> <br />Spraying the inner portion of the boot where the wire will insert with a small amount of WD40 makes the installation of the wire a easy project. That's it.... you're done.
 

BoatBuoy

Rear Admiral
Joined
May 29, 2004
Messages
4,856
Re: can spark plug wires be replaeced on coils?

Joe,<br /> Now I'm confused. I've read where to use copper-core wire(not carbon), but you say steel-core wire. Will either work.
 

minocqa

Seaman
Joined
Jul 16, 2003
Messages
68
Re: can spark plug wires be replaeced on coils?

thanks again Joe for the reply.<br />this should really save me some money , becaus i dont think there is anything wrong with my coils.<br />the wire just came out.<br />Don
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: can spark plug wires be replaeced on coils?

BoatBuoy.... Any outboard I've ever worked on has had the steel inner wire. I have no knowledge of the copper wire setup.
 
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