Question about 1996 BMW 7 Series

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Bmw 750 boiling in tubes + expansion vessel srbets temp ok + receives funds of stop ?ldruck engine??

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  • ramone_savag Apr 15, 2009

    I have the air with the screw that sits at the expansion vessel, it seems to leak a little when the thermostat has been changed cooler on the car, the question is why do I like excess boiling in the expansion vessel?? they may be topplokspackning ????? have asked a couple of bmw guys but they do not know answers to why the boil in hoses temperaturmätarn is quite ok it is not the spanking, the engine sounds ok, next question öLDRUCK ENGINE ??????? is the oil pump??

  • ramone_savag Apr 18, 2009

    not really had tried to do comp test and soo on everythings ok np whith sound no ticking or bad comp

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I'm not doing this for the money...Just to see if I can figure out what you're saying...From what I understand you are concerned about boiling coolant in your hoses and something amiss with your engine oil.
If I understand this correctly, I suggest you do a compression test on the engine and a coolant pressure test as well. I believe you have a blown head gasket.

Posted on Apr 16, 2009

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This happens when you don't properly vent a sealed storage tank before emptying it. Hot gas/air in a sealed container and you let it cool. The air pressure difference inside is so great that the structure is compromised.

Thanks

Posted on Apr 15, 2009

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Posted on Jan 02, 2017

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1 Answer

Connect 1.8tdci overheating issue.


Does the temp gauge read hot or no?
If cracked it can push pressure into the tank to make it seem like it's boiling but this also means the water will leak back into engine when cooling. Do you have a grey goo on your dipstick when you check the oil?
If yes then YES block is history.

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Why does my 1994 bmw 318i coolant disappear from expansion tank?


iT SOUNDS LIKE YOU HAVE GOT AN AIR LOCK ....yOU NEED TO EXPAND YOUR EXPANSION TANK WITH A LARGE FUNNEL.... THIS ALLOWS THE AIR TO PUSH THE WATER UP WITHOUT LOSING IT ALL OVER THE FLOOR.......THE CAR NEEDS TO RUN UP TO TEMP TO ALLOW THE THERMO TO OPEN....THIS WILL ALLOW THE AIR & WATER TO FLOW ALL THROUGH THE SYTEM UNTIL IT REACHES THE EXPANSION TANK................HOPE THIS HELPS......PAUL B.

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1 Answer

The car was overheating i checked all hoses and replaced the thermostat the radiator it still is ovrheating and the water is boiling in the overflow tank


Answer could be a faulty thermostat,or it could be a sign that your head gasket is about to blow ,or last of all your timing could be out of sync.

Answer 2 from Inventus: It means your cooling system is funtioning properly. In a system having a coolant recovery tank, coolant in the radiator is always up to the brim, hot or cold. There is negligible or no air space. When coolant in the radiator expands sufficiently due to warming from the engine, it will squeeze past the pressure cap's bottom seal and flow into the recovery tank. (If no provision for such expansion was present, the expansion would rupture the radiator or your hoses.) Only coolant within the radiator is under pressure, and because of this pressure (together with the elevated boiling point that the "anti-freeze" permits), it normally does not boil. But once past the pressure cap's bottom seal, the overflow is at atmospheric pressure and therefore boils.
This boiling is usually unnoticed after a short, i.e., local, trip because the cooler coolant already in the recovery tank quenches it. But after some highway driving the influx of more hot overflow heats up all the coolant in the recovery tank to the (unpressurized, i.e., "natural") boiling point.
As the engine cools when shut off, the contracting coolant in the radiator sucks back coolant from the recovery tank. Fluid in the recovery tank should never be below the "full hot" or "full cold" marks, lest air be sucked in.
-- BETTER ANSWER ==
Your cooling fans are not turning on. It is not normal for your overflow tank to boil like that. It is true that your radiator is overflowing into the reserve tank, but that means yourr adiaotor is boiling. Check for blown fuses or relays for your cooling fans. IF theya re fine. run your engine for about 15 minutes and drive. When you temp level is at normal operating temp open your hood with the engine runing and see if your fans are on. If they are, then you may have a bad thermostat or a plugged radiator, or a bad water pump. If the fans are not on, get your cooling fan switch replaced if your car has one. Check your temp sending sensor

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1 Answer

Vw jetta iv, temperature alarm sounds and flash with no aparent reason. temperature dial indiator is ok.


I WOULD CHECK BOTH RADIATOR HOSES TO MAKE SURE THEY ARE HOT. THERMOSTAT COULD BE STICKING SLIGHTLY CLOSED.CHECK COOLANT LEVEL MAKE SURE COOLANT NOT LOW.IF COOLING NOT BOILING OUT OF THE EXPANSION TANK. I WOULD HAVE CAR HOOKED UP TO A DIAGNOTIC SCANNER AND CHECK COOLANT TEMPERATURE SEE IF TEMP. OVER 230 DEGREES IF SO RADIATOR COOLING FANS NOT WORKING.COOLANT THERMO SWITCH BAD BOTH FANS SHOULD BE RUNNING AT LOW SPEED.IF ALL LOOKS GOOD YOU COULD HAVE FAULTY LOW COOLANT SENSOR IN EXPANSION TANK.MAKE SURE COOLANT IS IN THE EXPANSION TANK BECAUSE COOLANT LEVEL COULD BE LOW.ADD COOLANT IN THE EXPANSION TANK UNTIL YOU AT MAX LEVEL LINE ON THE EXPANSION TANK.DONT OVER FILL THE EXPANSION KEEP ADDING COOLANT UNTIL COOLANT LEVEL STAYS AT THE MAX LEVEL LINE ON THE EXPANSION TANK.

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1 Answer

I have continuos air bubbles from my expansion tank on my 1995 318i e36 4cylinder bmw


if you mean boiling water, it is unfortunatly the gasket of engine block need to be changed.

Mar 31, 2011 | BMW 318 Cars & Trucks

1 Answer

The temperature sensor shows overheating after the engine is working nearly 15 minutes. The charade was working fine, but recently he lose power and the engine sound changed. However, the temperature was...


Hi in your case i will recommend that you first check the pressure in th engines cylinders the compression. I think that your head gasket has blown between to cylinders and the water is going out that way. god luck Hans

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2 Answers

Engine temp goes up to 230 degrees


It's actually normal for engine temps to go up to 220 deg. F or 230 deg. F in the summer time, even in normal engines that run at 196 deg. F typically.

This happened to me with no malfunctions on my 1997 Cadillac Deville, yesterday.

Actually, engines run more efficiently at higher temperatures like this.

Just make sure your coolant is topped off and that it fluctuates between lower temperatures and this high reading.

This is a normal temperature in my experience for GM vehicles.

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1 Answer

Coolingsystem. exspansion tank leakage. maybe the


you said " till the water dissapears" , I am hoping that you are not running just strait water in the cooling system. Especially in a hot climate.
You must have antifreeze/coolant for the system to work properly. It will dramatically raise the boiling tempreture. If you run strait water , as soon as the engine reaches 100 c the water boils , and the pressure of the steam could burst a hose , or an expansion bottle. If your expansion bottle keeps failing , I would look at it as the effect of the problem , not the cause of the problem.

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3 Answers

Refilliong antifreeze and water in a new radiator


Use only long life type of antifreeze, mix the water and antifreeze 50/50, equal parts.

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