Plug wires

[Pods]

I recently posted a question on this board that when running my 1984 90 hp johnson outboard on a muff that the left side head was running warm and the right side was cold. While in the process of changing out the plugs I noticed that the plug wire had broke loose, corroded, from the coil,this was on the top plug right side. My question is could this have caused the head to run cold, that is no fire to the cylinder? <br /><br />My second question is can I replace the plug wire with automotive plug wire versus ones made for outboards? The cost for the auto's are a lot cheaper. Let me know what you guys think.<br /><br />Thanks,<br /><br />Pat

 

[Paul Moir]

Re: Plug wires

Sure could!<br /><br />You may not use automotive plug wires as they have carbon cores for EMI supression, and outboards use metal (copper) core wires and supressor plugs instead. It does make a difference with CDI ignition.<br />You can make your own plug wires pretty easily if you wish. Boots, terminals and wire should all be available from your local dealer. Small engine (lawnmower) shops may also have what you need.

 

[Silvertip]

Re: Plug wires

Any of the larger auto stores carry wire core spark plug wire in bulk. Its inexpensive and perfectly suitable for outboard use. I also use NGK plug boots (the type used on motorcylcles) but I remove the resistor built into them. The other end of the wire is standard automotive but can vary depending on the engine and coil type.