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1975 Chevrolet Corvette Coupe Base

1975 Chevrolet Corvette Coupe
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December 28, 2010, 8:16 am

Sonny G

Question: no water flow in 88 vette after changing water pump

88 corvette, the water pump died, and ive replaced it, however I'm only getting a tiny amount of water flow through the radiator. ran water into upper hose with garden hose, get great flow out the bottom of radiator, replaced thermostat twice (checked both they open fully in pot of boiling water)pulled water pump back out. (edelbrock high flow part# 8815) correct for my car, pulled back plate off of pump, impellers still attached and spin with shaft as normal. Forced water down through water outlet on manifold (where thermostat sits) and I get a health flow of water through the inlet on the passengers side of motor, but nothing came out of drivers side inlet, could this side be blocked somehow? should water come out of the drivers side inlet on the drivers side head?

December 29, 2010, 10:27 pm

Richard W
Expert Mechanic

Has some one changed the intake manifold? If so they couls have put the intake gasket on wrong. If there has been no work done on the manifold then I would run radaitor flush in the engine with no thermstat. That sould get the coolant moving. Also when you do that check the heater hoses to see if the are getting hot. If both are getting hot then you have flow. Then check to see if you are running at a good temp. Check the upper and lower radiator hoses and see if both hoses get hot.

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