Question about 1999 Mercury Cougar

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Air pocket in cooling system. How do I bleed the system? Thanks

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The generic way to bleed any cooling system is this, raise the car front end up as high as poss with a floor jack, top off the radiator and fill the coolant recovery tank all the way up, run the engine until it gets hot but do not overheat it, allow the engine to cool the system will self purge of air and pull the needed coolant into the engine from the recovery bottle, after this is done check the levels, repeat if ness.

Posted on Aug 05, 2010

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Posted on Jan 02, 2017

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SOURCE: Do I need to bleed the system after replacing the radiator cap?

Definitely recommended - Process is fairly simple, let the vehicle idle and/or reach normal operating temperature - turn the"bleed screw" slightly open and note as the air bubbles escapes from the screw. Also make sure the radiator is topped up with sufficient coolant. Funny enough, the mechanic should have taken care of this process after replacing the thermostat....

Posted on Jul 16, 2009

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SOURCE: bleed air out of cooling system

NO, BUT YOU WARM ENGINE, JACK UP FRONT, LET COOL UNTIL YOU CAN REMOVE RAD. CAP, SAFELY.IF NEEDED, AD COOL. TO RESERVOIR AFTER CAP CAP IS REINSTALLED. REPEAT AS NEC, ON JEEP TOOK ONE TIME

Posted on Oct 08, 2008

  • 204 Answers

SOURCE: bleed coolant system

Old methos id to leave the raditor cap off and squeeze the coolant hoses to get the air out.

Posted on Feb 05, 2010

ftw1952
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SOURCE: how do you bleed air pockets out of cooling system in 99 grand am

If a valve is expose on the upper heater hose piping crack that open only when the engine is warmed up for at least 15 minutes. If no valve is seen you will need to loosen one of the heater hose clamps ever so slowly to let the air out. The process to loosen the clamp is not recommended unless you do this first..... When the engine is COLD loosen a hose clamp and remove the hose and put it back on. Thighten the hose clamp snug only. The start the engine to warm up. In about three minutes see if you can twist the hose to move on the fitting. If you can snug the clamo a lttle more and check again. You do not want the hose to come off if too loose. Now that the engine is warmed up for 10 to 15 minutes shut OFF the engine and barely loosen the same clamp 1/4 turn at a time until coolant trickles out. Listen carefully for air escaping too. Air pressure does built up only when the engine gets hot and the air pocket does not move when the engine was cold with the hose removed beforehand. If no air was released upon this proceedure you have a blockage in your system and flushing maybe the only other option using pressure instead forcing the coolant out. Get a can of coolant flush before the power flush proceedure. A radiator pressure tester can be used to power flush with an air fitting adapter installed in place of the guage

Posted on Mar 28, 2010

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