3V Triton Coil issues.
I seem to be having an unusual issue that I'm not sure what the best fix would be. The contact on the underside of my coils, inside the boot where the spring connects, keeps getting corrosion on it. Similar to what a battery terminal would get, but not quite as bad. Often I can pop it out, removed the boot and spring, and scrape off the corrosion, and the problem goes away for a while. At first I just kind of shrugged it off, but it's happened to three different cylinders. One of the coil contacts was significantly worse with corrosion and had to be replaced.
I'm not really understanding how this is possible. I know the boot protects somewhat from moisture, but this seems absurd. I'm not even in an especially wet climate (DFW Texas area).
Anyone have thoughts? Coils are Denso if it matters.
1. Usually the seal from cowl to the hood has a seem right above rear cylinders. more pronounced on drivers side. Check the rubber and seal with silicone. Make sure water gets directed to outer edges of cowl and drains properly.
2. vacuum out the cavity where boot seats
3. an ounce of prevention saves headaches. I liberally use dialectric grease inside the boot and anywhere the spark will be. after the boot/coil is assembled, I then put plain old automotive grease (500F melt temperature and coated the o-ring on the boot. I also ran a bead of grease on the valve cover where the o-ring seats. tighten down. should keep water from getting anywhere near anything electric. Never had issues during Monsoon rains in Hawaii lol
4. check for cracks. You may have a cracked coil. or bad boots. My last time I had a cracked coil. Luckily I was able to seal it with gorilla glue and never had an issue.
best of luck
I believe I've had it happen on cylinders 3, 5 and 7. So not all rear and not all on the same bank. (V10 here).
I did put dielectric grease on the base of the boots when I installed new coils, but I may just take them all out and heavily coat all contacts as mentioned. I'm not sure that I get leaks onto the engine from outside, but havent really checked. Will have to do that next rain.
Thanks again!













