Water pump/ Flushing Coolant system [Archive] - GrandAmGT.com Forum

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jd99gagt
05-08-2012, 04:11 PM
Is it bad to run the water pump for a few seconds with no water coming out after flushing the system to make sure there no extra water in there to get my anti-freeze/water mix right? Also, Is it absolutely necessary to drain the radiator and engine block before doing this?

AaronGTR
05-08-2012, 05:44 PM
It won't hurt it for a few seconds, but I don't see why you would need to. If you drain the radiator, everything in the water pump will be drained out. You have to at least drain the radiator before doing a coolant flush. If your coolant is very old/dirty, I'd take the drain plugs out of the block too and drain the coolant jackets to get everything out of the system before doing the flush. That way you start off with just clean water and the cleaning agent, to get the system as clean as possible.

jd99gagt
05-08-2012, 05:55 PM
or to clean the radiatior I cound run it without the hose on the other side of the water pump side right?