Im doing some work on my car. The car will sit in outdoor during the repairs.
The hood will be kept on the engine bay but harness plugs are out in the air.

What are some best practices to prevent these plugs do get wet/damaged by being in bare air.

I have the same question for the engines holes : Intake/exhaust holes.
And hoses.

Thank you

 

You can wrap the plug ends in a fold lock sandwich bag and rubber band it. This will help keep excess moisture and dirt out.

As for intake and exhaust, I just wad up and shove shop paper towel into each hole. The paper towel absorbs moisture and the head is aluminum so doesn't rust per say. This should keep the majority of moisture and dirt away from the valve stems.

Oh and if you are especially concerned about the harness plugs you can throw the little silica bags from pill bottles etc into the bag before you band it up. This will absorb moisture inside the bag to help prevent condensation problems from temp changes. This is if you are extremely concerned about moisture issues.

 

Fill èach plug with silicon dielectric gel. It's hydrophobic and will eliminate any moisture present while preventing any from getting in. I use it on my vehicles and outdoor equipment. Put a couple of drops on the threads of a light bulb and it won't sieze up in the socket. Ever.

 

Some of the reasons I didn't suggest this is the plugs are already weatherized with seals and cleaning up the grease to make them OEM pristine is a real PITA. Also, many of the plugs are big mouth plugs and it would take a significant amount of Dielectric grease which isn't the cheapest thing in my area (small tube for 20 bucks for 1 plug). As such, sandwich bags and rubber bands is just as effective while being cost effective as well as maintains the clean OEM plug status.

 

Tell me about it....