Question about BMW 323

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Difficulty with overheating and filling of radiator ? is there a bleeder valve to allow air escape durring filling?

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  • Anonymous May 12, 2009

    NO! not a typical blown gasket, otherwise he's OIL would look all milky from the antifreeze going into the engine! do some research before you assume! and it could be a number of things, your fan clutch might be out or you are leaking the fluid somewhere. or a number of other things that could be wrong.! but take it to the shop and pay the man some money and they will figure that out for you and possibly fix it.

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This sounds like a typical blown head gasket.

Posted on Feb 23, 2009

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Opened bleeder valve on charger 2.7. Only vapor comes out. Bad pump or thermostat?


Continue to add water until the vapor "lock" is purged of all air. All coolant bleeders are supposed to reside higher than the radiator/coolant filling area...the coolant should flow out of the bleeder valve before tightening the bleeder shut.

Jan 09, 2015 | Cars & Trucks

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Temputure gauge fluctuates when car is at operating temputure


The radiator might have "air pockets". They cause erratic readings at the temperature gauge. Check the system to see if bleeder valves are provided. If they exist, just open the valves allowing air out of the system while filling with coolant until coolant drips from the bleeders. If bleeder valves are not provided, open radiator cap and fill with coolant. Start the engine for about 30 seconds, check coolant level and fill to level if necesary.

Nov 11, 2013 | 1999 Mercury Grand Marquis

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Procedure to release an air pocket in the cooling system. Hoping Fan runs! :P


Is there an air bleeder valve near or on the thermostat housing? Crack it open to see if air escapes.
Usually to remove air from cooling system, you keep the radiator cap off after filling, start the engine and wait until the thermostat opens and the car has reached normal operating temperature, then shut off engine, top up the radiator and the overflow tank, replace the rad. cap. Try that to see if you can get all the air out. If still overheating, do check the fans. Then could have the coolant system pressure tested for keeping pressure in the system and no leaks.

Jul 30, 2013 | 2006 Chrysler PT Cruiser

1 Answer

Car started knocking really bad got a cylinder 2 misfire code after opening coolant bleed valve with enging hot


Okay, it may be due to overheating, that may be the noise you heard, lets hope. first allow engine to cool, open radiator cap or the resivoir cap, which ever is the fill, remove the bleeder at top hose and fill radiator slowly until coolant comes out bleeder.

note if water pump was replaced due to leaking and engine was overheated at that time then it may be a good idea to replace the thermostat .
after filling is done start engine and allow it to run. watch temperature if temp start to climb past half way shut engine down and let sit for 5min. then restart and check level, in res do not open cap . feel air from fan and see if it is getting hot, this may take up to a half hour but do not drive,

A few questions, does this jeep have an electric fan?
when you heard the knocking was engine temp hot?
If you start jeep cold does engine knock?
Did this jeep get a new thermostat with waterpump job?
did it overheat when pump went bad and why did water pump get replaced?

sorry for all the questions ,just trying to get all the info to help you .

Dec 25, 2012 | 2004 Jeep Grand Cherokee

1 Answer

I need to know how much liquid my radiator holds for my 1995 Oldsmobile Achieva?


the rad holds about 1.5 gallons...but if u changed the rad u will need around 3 gallons since the coolant in the engine has also drained out....also open the bleeder valves for the cooling system before filling...these valves r located on the thermostat housing an on top of the water pump outlet pipe...they r brass in color an u will need a 7mm socket on a straight slot screwdrive to open them....u need to open them to allow the air to escape when fill or u can have the system air bound an the engine will over heat an cause damage the the cylinder heads....when coolant runs out of them at a steady stream close them an start the car..do not open them when engine is running....but some cars only have 1 bleeder

Jul 16, 2011 | 1995 Oldsmobile Achieva

2 Answers

I have changed the thermostat, and Waterpump. But it is still overheating. Someone said that it might be the head gasket.Will that cost me alot of money? Will that sovle the problem?


Before you tackle the head gaskets I would check a couple other things first:
  • If you just replaced the thermostat and the water pump, that means that you've recently added coolant to the cooling system. I would check for air bubbles in the system by 'burping' it. In order to burb the system you need to open it up either at the radiator cap or at the bleeder valve. On a lot of cars you can find the bleeder valve by following the upper radiator hose to the thermostat. Slightly open the bleeder and squeeze the upper hose a few times to try and work out any air bubbles. You can also run the engine with the bleeder open or the cap off to try and circulate the coolant and allow any air to escape. Air bubbles in the system can cause overheating.
  • Another thing you can check are your fans. Run your car for a while at idle to allow it to heat up. When it gets to the point where it starting to overheat check your cooling fans to see if they're running. If they're not, chances are that the coolant temperature sensor has gone bad which is fairly inexpensive and easy to fix.

If it does end up being the head gaskets then yes, that would cost a lot of money to repair. Let's hope that's not it.

Good Luck!

May 25, 2011 | 1999 Cadillac DeVille

1 Answer

Ford falcon gl xf model 1993 overheating


If it is a 4.1 alloy head crossflow then you may have an air blockage in your cooling system and the only way to check this is to undo the bleeder valve on the thermostat housing, start the engine with radiator cap off and once engine is at running temp it should have a steady stream of coolant (no air) coming out through bleeder but if it's intermittent with air and coolant at the same time then you have air in cooling system. To correct this fill radiator with engine still running and what bleeder till there is no more air and just coolant, close bleeder replace radiator cap and problem should be solved if not replace thermostat and follow the above instructions.

Jan 31, 2011 | 1983 Ford Fairmont

1 Answer

I cant bleed the air out of my cooling system. I have a 3.1 motor. Ive tried opening up the bleeder valve but it still has air in the system.


It should bleed out by itself as there is an overflow tank mounted under the hood. This tank (plastic Usually), is an expansion tank that allows the hot fluid to force itself into this expansion/overflow tank, allowing the air to escape. If this tank is not about half full (there is a fill line marked on it), when you end driving. The fluid when it gets cold will be sucked back into the radiator, then you need to add fluid to the cold fill line after it cools down. If the vehicle is over heating then your pressure cap may be kaput or your radiator is being blocked or cooling fans not operating.

Jan 29, 2011 | 1999 Chevrolet Malibu

2 Answers

I drained the radiator system so that i could repair a leak in a metal pipe i refilled the system, the vehicle ran fine for a short while then it started getting hot and the engine makes wierd...


Domino effect youi have repaired one thing and now something else has gone wrong ,i would hazard a guess and say water pump but really you will need to ask a local mechanic to have a look for you as too many variables

Nov 21, 2010 | 1993 Pontiac Grand Am

1 Answer

Cooling system is air bound, how can I bleed it out?


Look for bleeder valves somewhere on the top of the cooling system. If you see any use them to remove trapped air. Start the engine and slowly turn the screw to remove trapped air. If there are no bleeder screws then remove the radiator cap from a cool engine. Make sure the radiator is full. Start the engine and watch for escaping air bubbles. Keep the radiator full at all times. When the engine reaches close to full operating temperature and you see no more air bubbles escaping put the cap back on. You may have to do this one more time if you experience any more trapped air in the system. Just make sure to look closely for bleeder valves. They will look like tire valves with a cap.

Jan 10, 2010 | Chevrolet Silverado 2500 Cars & Trucks

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