I wouldn't be surprised if this has something to do with "the tick". My tick over the pasted month developed into a tick and a rattle. I checked both plug wire and plug; both look okay. Thinking its time to retire the Disco. My hopes aren't high. This along with the three amigos keeping my company on long road trips, I think me and the truck had enough.

150,xxx miles RIP Black Beauty!

Update from tech to follow.

 

There have been recent posts about taking the SAI off line and the tick stopping, might want the review that angle.

 

The SAI has nothing to do with any ticking sound, don't believe and pass around everything you read.

 

Got the call today. Cylinder 5 misfire due to bad plug wire.

My tick/rattle is a cracked flex plate.