Ignition wires (replacement) for Nissan TLDI 90

[CP175]

I have a 2005 NSD90B (as shown on engine serial # sticker). So I've tested and confirmed that my ignition wires are in need of replacement. Short of buying ignition coil packs (1 per cylinder X 3) which seems like a waste of money if the coils are working, is there a way to purchase just the ignition wires?

I have tried sourcing parts (NGK plug boot, wire and coil pack boot) to make a set of my own, and the end that connects to the coil pack is pretty much impossible to find. Any recommendations on how I can replace the wires and not have to spend $100+ per (buying entire coil packs). Thanks for your help!

 

[pvanv]

The cap for the plug end is available. Seldom are the wires themselves ever an issue. They come with the coils complete. The two uppers are identical, while the bottom one is a little different. What makes you think you need new wires? If you do, you will need either to make your own, or get used. For that matter, you could make up new wires and re-use the coil boots.

 

[CP175]

Paul. Thanks for the reply, I appreciate it. Big help. I'm going to take your advice and build new wires myself, and see if that works.The reason I think I need new wires, is due to an outing (end of last summer) whereby the engine had a slight mis-fire/hesitation (at WOT or close to it), but then immediately went away with no other way to replicate. It happened with no consistency maybe a couple other times over the course of last summer. The engine received new plugs fuel filters etc with the 100 hour tune up (beginning of last season at Nissan mechanic where I originally purchased engine), engine now has 117 hours. I concluded that it needs new wires because last summer one time when I was flushing the engine (boat on trailer after a day on the water), I decided to take the engine cover off (while it was running), and my hand grazed the top ignition wire whereby I got a healthy zap, which to me means it has some kind of a "leak". I'm hoping that an inexpensive wire replacement solves the rather weird and occasional misfire issue, and if not then nothing ventured - nothing gained, and I'll go buy new coil packs & wires.
Again, thanks for your help. If you have any further ideas, let me know.

 

[pvanv]

Put the motor in diag mode and see if anything is listed in the ECU as well.

 

[Sea Rider]

If suspect of having an electric ignition component leak, take the combo inside a dark garage, start the motor on muffs, barrel and check if having visible air leaks, sparks. Are the internal spark plug wires made of many small wire threads or are just one thick carbon thread as found in new cars ? Most of the ignition coils ends and plugs caps are screwable ones, check as could just replace the wires for same length ones. Sometimes the wire cables are glued and screwed...

It's not unsual to receive a strong spark shock when your hand is near an electric component while working, you're dealing with 60 K volts low amps ones....LOL !!

Happy Boating

 

[CP175]

A follow up for those that helped. So, I successfully made the new set of wires, and have since installed them. All good so far. Need to get her on the water again to really be sure. The new wires were comprised of NGK Screw on type spark plug plug caps & rubber seals (these were basically exactly like the oem), new 8mm silicone suppression core wire, and I ordered and made up new ends for the coil pack connectors - but I had to re-use the coil cap rubber boots since they were in good shape and I couldnt source any that diameter. I zip-tied them on just like OEM, and It came out great. Thanks for the tip Paul, I'll put the motor into diag to check for any ECU codes before I head out, just to see if anything comes up. I kinda doubt it, but it is a good idea. Thanks again all.