Hey everyone,

I"m currently experiencing some weird tapping/liquid gushing noises in my 2002 CR-V. Not experience long any overheating or any other symptoms. As soon as the noises started, I checked all my fluids and the only one that was low was the excess coolant reservoir (close to the bottom). I drained the radiator, refilled with distilled, and did multiple refills until around 50/50 coolant and distilled water. I've tried for hours to burp the system (thinking that's the issue) but it seems that no matter what I do, the noises are still present at around 1500 rpm (over that I don't hear any noises. I'm not sure yet if i have a coolant leak or anything like that, but for the past few days, i haven't noticed any lost coolant. I also used a kit to pressure test the cooling system. The result was a 1 psi drop in 45 mins with no visible leaks. Has anyone experienced this/know what's going on?

Here's a video of the sound I'm hearing: https://youtu.be/gclJhzo_gOw Note: Taken while in neutral and revving around 1500 rpm

 

Nose up a little, cap off until fans kick on? Also squeeze rad pipes and use bleed port?