RTV sounds good.

Might check valves, too.

 

Just use high temp RTV.

 

I have probably replaced a dozen Honda valve cover gaskets over the years. I have yet to use any RTV, and haven't had leaks. The most recent were a 2017 CRV and a 2018 Odyssey (2 gaskets).

 

You've been lucky, always try to use it on those problem areas.

 

got 90% of this apart last night - any guidance on releasing the cable-hold clip on the passenger site on the back side of the engine? I gave up for the night on that one.
Once that's free I'll be able to get the cover off.

 

Squeeze it with a needle nose pliers. Or use a small flat screwdriver to release the tab on once side, then release the other side while attempting to pull it out.

 

That's been my plan - I just couldn't get the right angle / reach on it. I'll start it fresh once the weekend starts. Appreciate the support.

 

I used a pair of long rear 90 degree needle nose pliers to basically nuke that hold done. Cover off, on to the next issue

 

2018 CRV LX 2.4L - 77K miles.
Already in progress on the valve cover gasket repair (got the cover removed today finally, after dealing with a pesky cable hold that was murder to undo).

I knew from removing the ignition coil from cylinder #2 that I was facing a defective spark plug tube seal. However what I found out online tonight was that these are not replaceable; instead, you have to get a new valve cover.

I pulled the PCV valve as well to check it; no rattle. I wonder if that was a contributing factor.

I opted to buy a non-Honda part on Amazon - hope I don't regret it.
Amazon.com: MITZONE Engine Valve Cover with Gasket Compatible with 2015-2019 Honda CR-V 2013-2017 Accord 2.4L Replace # 12310-RDF-A01 : Automotive

Has anyone else had to deal with this on the 2.4L?

 

Looks like you can get Felpro tube seals at Rock Auto.

2018 HONDA CR-V 2.4L L4 Spark Plug Tube Seal | Shop Now at RockAuto

Ignition Parts and More for Your 2018 HONDA CR-V at Reliably Low Prices. Fast Online Catalog. DIY-Easy. Your Choice of Quality. Full Manufacturer Warranty.

www.rockauto.com

 

PCV is good idea.

Here is my thread, don't think you have bad seals, it would be the tubes sticking up. I would use Honda parts.

https://www.crvownersclub.com/threads/2017-2-4l-mm-code-4-valve-adjust.234291/?post_id=1796551#post-1796551