2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

coolant not flowing???

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Old Jul 25, 2006 | 10:04 PM
  #1  
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87 Mazda Rx-7 Mods**91 JDM
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coolant not flowing???

ok so my coolant is not flowing right can it be a clogged radiator or water pump it also send it back to the reservoir what can it be???
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Old Jul 25, 2006 | 10:08 PM
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From: Camp pendleton
Can you be more specific then not flowing right? Is it not flowing enough causing it to overheat, thermostat stuck.
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Old Jul 25, 2006 | 10:29 PM
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and how did you verify it wasn't flowing?
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Old Jul 26, 2006 | 01:50 PM
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87 Mazda Rx-7 Mods**91 JDM
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From: Orlando,Fl
cause i can't see it moving it just sits there and boils and its not circulating cuz its sending back the cooland to the reservoir
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Old Jul 26, 2006 | 02:01 PM
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So do you see bubbles and such? Try replacing the thermostat with a factory mazda one. Otherwise you might have a bad coolant seal.
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Old Jul 26, 2006 | 05:17 PM
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87 Mazda Rx-7 Mods**91 JDM
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From: Orlando,Fl
i don't really see bubbles just boiling also am thinking it could be my thermostat but then again can it be a clogged radiator or waterpump? Also i think it could also be a leakeage of air near the wateroutlet neck where you but the coolant it's a 87 model
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Old Jul 26, 2006 | 05:23 PM
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well........lets think about this logically.

You obviously see your water pump right?

There is a pulley on the front that is turned by a belt. Is it turning when the car runs?

If so, its presumable that the impellar inside the water pump is turning, however if you feel there is no flow after looking down the filler neck....I may suggest removing the water pump to verify that the impellar has not some how flew apart (highly unlikely)

Now.....you say you see it "boiling"...how hot is the engine when its "boiling" and how many times have you witnessed it doing this before taking action? The only reason I ask that is becuase its very likely you cooked a water seal.
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Old Jul 26, 2006 | 05:31 PM
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Well, are you loosing coolant? Also, does the car ever overheat at all? And is there any white smoke coming from the exhaust?
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Old Jul 26, 2006 | 07:22 PM
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87 Mazda Rx-7 Mods**91 JDM
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i don't give a **** anymore i think a blew the engine it started to backfire a little bit i going to hammer it to pieces
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