Question about Cars & Trucks
First, bleed only one radiator at a time. Remember the system is a closed loop so you will eventually get all the air out and hit water. If this is the first time the furnace has been used this year you could have quite a lot of air built up and it can take a long time to fully bleed the system. If you open two radiators and one is much colder than the other you can actually suck air into the circuit so open only one at a time. The air can also move around as you bleed the system so you may need to bleed it more than once.
Posted on Nov 21, 2014
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Posted on Jan 02, 2017
This is extremely important on some cars, for instance my BMW. 1. Have the car parked in a slight uphill slope. Make sure there is enough coolant in the expansion jar.
2. Start the engine and wait for the thermostat to open (upper radiator hose becomes warm).
3. Open up the radiator bleeding nipples slightly with a large screwdriver (bleeding nipples normally made of plastic with a '+* for a screwdriver to fit, at the highest points in the cooling circuit).
4. Allow air bubbles to fizzle out until you get a steady stream of coolant leaking out, use rags to capture leaking coolant.
5. Then close the bleeding nipples, switch off the engine and wait a few minutes for pressure to come down.
6. Open up the cap on the expansion vessel carefully and fill just below the "hot" marking.
7. Check levels again after a few miles and refill further if needed.
Posted on May 31, 2009
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
SOURCE: radiator over heating problem
if you hve water bubbleing while engine is running 5 will get you 10 that you have a blown head g asket ,suggest you go to radiator sevice centre,they can pressure test it and also have device to tell you if you have exhaust gas in the coolant. wont take more than 5 min. then you will know exactly where you are at...
Posted on Jul 29, 2009
SOURCE: 2002 Chevy impala overheating.
If your radiator is clean inside and you water flows and circulates with the radiator cap then it is OK. The leak is probably coming from the intake area or the head gasket. You could try some BARS leak that you can get at your auto parts store and see if it seal the leak. You pour it into the radiator when it is cool. You may have to drain some coolant. There is a drain plug on the bottom of the radiator that twist in the wrong direction to open it. If it does not open don't force it. Try the other way. It should come undone. Wait until it is cool.
Posted on Dec 20, 2010
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