dying pump? - help

LewisN2 · 20 Mar 2021 at 19:47

Hi all,

recently my delidded i7 8700k is suddenly running much hotter than usual - i have replaced the thermal paste and still no luck, it is running in a custom loop with a 360mm rad

what could the potential causes of this be? a dying pump? a dying chip?

note my pump is making a weird noise but also has been for quite some time and is also operating at the correct RPM so i am not quite sure where to start in diagnosing this

idle temps - 35-45 which is normal
gaming - up to 80 which is the concerning part

thanks in advance

LewisN2 · 20 Mar 2021 at 20:44

i am really unsure as to what it could be, i am starting to think it may be the pump, it is a few years old but still operating at correct RPM

LewisN2 · 20 Mar 2021 at 20:50

MikeTimbers said:
Is the pump vibrating "normally"? Does the BIOS (or software monitor) show the pump running? At what RPM? What is the pump? Is there a reservoir?

While pumps can fail, it's generally not the pump itself. So, some simple diagnostic steps first.

Clean the computer especially the rad. Compressed air (or a computer blower cleaner) to get all the dust and crud out of the rad. This is highly likely to make a difference to your temperatures immediately.

Is it possible that you have gunk in the block? What fluid are you using? Does the block have a clear top? Can you see if it's clogged?

yes the pump sounds how it always has to be honest, the software says the pump is operating at the correct RPM , the rad is already pretty much dust free, i could have gunk in the block however i use clear mayhem fluid and typically clear fluid doesnt build up much gunk, could it be that the liquid metal from the delid needs replacing ( personally i think this is unlikely but i am not a delid / overclocking guru )

LewisN2 · 21 Mar 2021 at 08:02

LewisN2 said:
i am really unsure as to what it could be, i am starting to think it may be the pump, it is a few years old but still operating at correct RPM

SpudMaster said:
Has the temp rise happened since deliding? If so check the ihs is making contact with the cpu die. Did you remove all old black silicone that held the ish in place? Did you put liquid metal on both the cpu die and underside of the ihs?

it was delidded about a year and a half ago (followed the guides religiously) and the temps have been fine up until now so i dont think it was the initial application - does Liquid metal need to be replaced over a time period?