missing problem

JamesB

Recruit
Joined
May 30, 2002
Messages
1
I have a 1977 175hp evinrude model 175749S ser. j0001697 . I have rust in my spark plug boots. I<br /> belive this to be my missing problem. I dont want to replace the coils and wires because of cost. <br /> Im looking for some tips to clean the spark plug wire termal inside the boot.<br />Do you believe this to be the 'missing' problem? This is an intermittent problem. If this is not the problem, do you have any other ideas for me to look for?
 

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
Re: missing problem

James..... Inside each coil is a long sprial like prong. The coil wires simply plug into the coils, then screw down onto those sprial prongs until they are tight. A small amount of WD40 adds some lubrication that makes it easy to install new wires. WD40 also makes it easy to remove and install the spring like terminals that are in the rubber s/plug boot.<br /><br />You DO NOT have to buy new coils to have new wires. You'll need the type spark plug wire that has a steel inner wire (NOT CARBON). This should be available at any reliable automotive type parts store.<br /><br />When installing the spring like terminal on the end of the wire, have the insulation cut back slightly, then fold the inner wire back against the insulated portion. Any wire that extends beyond the insulated circumference, cut it even with the edge. Now, estimate where the spring terminal would go, then, with the spring terminal at a 90° angle to the wire, insert the pointed prong of that spring terminal just slightly farther back into the wire, down to where it is level with the top of the insulation. Now, rotate the spring terminal to the front of the plug wire so that it is actually pressed up against the steel inner wire.<br /><br />That guarantees absolute continuity. All that's left is to insert the terminal into the rubber boot, and into the coil itself.<br /><br />If your wire is as good as new, reuse it. That's a judgement call you'll need to make.
 
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