NoPistons -Mazda Rx7 & Rx8 Rotary Forum - Overheating... what can cause this?

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- - Overheating... what can cause this? (https://www.nopistons.com/2nd-generation-specific-17/overheating-what-can-cause-61385/)

Quote:

Originally Posted by Rob x-7' post='835194' date='Aug 31 2006, 06:14 PM

I have seen impellers in pumps go bad, basically the pump no longer pumps water it just spins, it only comes out the weep hole when the seals go bad.

dammit stole what i was gonna say.

the weep hole is also for when the bearings start going bad, but they normally puncture the seals with the littlest amount of shaft play so if your seals are bad your pump is bad and vice versa.

wish i had a pic of the water pump i did on a 97 firebird the otherday. there was no impeller left.....gooooo dexcool.

kevin.

Quote:

Originally Posted by rootbeerdragon' post='835092' date='Aug 31 2006, 01:01 AM

how should i go about checking? simply feel around with my hand?

Yep. Just don't get burnt.