I drive a 2008 Focus SES with about 81,000 miles on it. Back in October 2012, a large section of wire conduit that covers the bright red wire insulation suspended over the top of the engine block basically melted off, or became brittle and fell off, due to the heat of the engine compartment. A coworker and I got some new conduit and placed it over the red insulation, then secured the conduit in place with electrical tape.
As you can see in the image below, the "new" wire conduit has turned from a plain black to a charcoaled grayish color. It looks like the heat of the engine compartment is causing the change in color, and the conduit appears to be becoming more brittle.
I am wondering three things:
- Is it a serious issue if the wire conduit comes off again? (meaning, if the red insulation becomes exposed)
- Should I go ahead and replace the wire conduit again directly over the engine block?
- If yes on the previous question, would there be any benefit to wrapping the new conduit with some silicon-rubber self-sealing tape that's certified for continuous use up to 500 degrees F?
Thanks for any input.