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Bleeding Air From Coolant

eXc

By eXc,
in General Maintenance

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GTSBoy Grand Master

GTSBoy

Posted
Posted
1 hour ago, joshuaho96 said:

Kind of surprising, with cars this old I've seen a lot of them suffer from high idle due to internal vacuum leak. Fuel trims look fine but the cold start valve just wore out from all the heat cycles and won't close up all the way.

That's a whole 'nother issue. Nissan ones get dirty and sticky.

The coolant heats the wax pellet thingo to close the valve, so it is open when it is cold. And so if there is no coolant it just takes longer to close, because the heat has to soak all the through the inlet manifold.

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