If I’m reading your question correctly, and I may be guessing, but I believe you are describing the wire channel that attaches to the valve cover bolt/stud combo. It is pushed onto the stud portion. It just needs to be pulled straight up without hesitation. An angled lever might help push from the bottom but there isn’t much room. Best to just put down the latte show it who’s boss.
The plastic channel you are talking about is where the wiring harness runs thru for the fuel injectors and sensors.
Generally I pull up and wiggle in a circular pattern as I pull upward.
I messed with for a long time when I changed my VCG. Wiggled, waggled, yanked and cranked. Just when it seemed like it was going to come free, pop it broke. Now secured with some zip ties.
I messed with for a long time when I changed my VCG. Wiggled, waggled, yanked and cranked. Just when it seemed like it was going to come free, pop it broke. Now secured with some zip ties.