Honda-Tech - Honda Forum Discussion - Coolant in Reservoir boiling. Need Help!!

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- - Coolant in Reservoir boiling. Need Help!! (https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/coolant-reservoir-boiling-need-help-3323880/)

1990civicdx

07-13-2018 08:08 PM

Coolant in Reservoir boiling. Need Help!!

Checked coolant hoses for leaks but none where found. Thought I’d have a blown head gasket, but it’s in good condition and don’t see white smoke from exhaust. Temp gauge does not move when engine is warmed. Any suggestions work ?????

acmoc

07-13-2018 09:11 PM

Re: Coolant in Reservoir boiling. Need Help!!

boiling or bubling?

1990civicdx

07-13-2018 09:51 PM

Re: Coolant in Reservoir boiling. Need Help!!

Sorry, yes it’s bubbling.

DaX	07-14-2018 04:08 AM

Re: Coolant in Reservoir boiling. Need Help!!

I'd try replacing the radiator cap and see if that helps. The springs can break or become soft.

acmoc

07-14-2018 06:44 AM

Re: Coolant in Reservoir boiling. Need Help!!

rad cap and check the reservoir and it's components for cracks.
Mine had a crack in the little elbow piece and that caused a ton of issues.

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