The problem is one of 3 things, the flow meter is bad, the pump is bad or the loop is clogged up from using pre mixed coolant or dies.
If I were you I do this in order.
1: Ditch the POS flow meter, you don't need it and they're almost always junk. Aside from looking cool and retro you don't want it.
2:Test the pump out side the loop. Have the inlet tube suck water out of a bucket or something and have the outlet go down the drain.
3:Flush the system and clean everything. Replace the coolant with Distilled water, biocide and a corrosion inhibitor if you mix metals.
DO NOT USE PRMIXED COOLANT OR DYES. There is a good chance that your problem started with a premixed coolant. They brake down and clog up systems, some can even corrode blocks and rads.
How many times does it have to be said?
A reboot likely works because of the initial startup pressure...from none to pressure.
I second this.
Ill get delete it all the same because even though it works for me and others I do not want to spread miss information to anyone that could ruin their build and you are on top of his issue.
Your not spreading miss information. I been water cooling system since 2003ish both for myself and as a side job. Wile silver and EK's crappy nickle do not mix well.You should not be using anything from EK that's Nickle plated to begin with. I have ran many loops with silver coil,sliver fittings or silver lined tubing not once (aside form EK nickle crap) have I once had a problem with silver and nickle. I had more problems with brass rads and nickle blocks if anything. This is coming form a guy that's water cooled 500+ systems of all shapes and sizes, its not a works for some and not everyone, I had too many systems for it to be that way, its more of a works for the educated and not the uneducated.
That aside there are better things you can use inplace of silver, silver only works if you run the loop regularly and still does not do that good of a job. Copper sulfate is far better then silver.
