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Bmw 2001 530d rattling when i take oil cap off . sounds great when on

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Rattling? I would think what you hear is valve noise. The car will always have inherent metal on metal sounds when open to the air. If you think its out of the normal then take it to a shop you trust.

Posted on Jul 16, 2009

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Posted on Jan 02, 2017

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I want to know why my car after starting it the is sound like something isnoit getting enough oil or what car is BMW x3 2.5i SUV


if its rattling and the oil level is ok and the pressure gauge/warning light saying good may be timing chain and/tensioner problem

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Where is the filler cap located in my bmw 325i 2002 model


Your question did not specify what "filler cap".
The above response from FTjoe is for the power steering filler cap.

The following RealOEM link is for the engine oil filler cap (Item 4) which is square and black and is on top of the engine. It goes through the plastic cover into the cylinder cover
http://www.realoem.com/bmw/showparts.do?model=ET37&mospid=47720&btnr=11_2172&hg=11&fg=15
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The engine oil filter housing cap (Item 3) is shown below:
http://www.realoem.com/bmw/partgrp.do?model=ET37&mospid=47720&hg=11&fg=30
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Lost oil pressure in a 1999 540i and timing chain noise


from the book the oil pump is driven by a chain from the crankshaft. It is very possible that the oil pump has come loose and thrown/broken the pump chain. It will require a sump removal to check it out. recheck the oil level as what you read may have been a froth level . there is no reason for extra oil unless it was overfilled to start with or there is water contamination ( white /grey oil)

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I have a 2002 525i bmw, sometimes when i crank up the car a big pile of smoke comes out, and thens goes away. the car runs great sometimes and then sometimes when i make a turn i can hear the valves rattle...


It doesn't have to run hot to be blown. Sounds like you have oil getting into one of the pistons when you make that turn. After a couple of times, it ruins your plugs and that's why you're getting a mis-fire. It sounds to me like the engine itself is blown. The pistons along with the plugs are firing (burning the oil that gets into the cylinder walls. It's time to look into a rebuild.

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Rattling under car -- especially when steerling wheell is turned both ways while parked, in reverse or forward or netural . bmw 230 series


while driving at higher speeds you may not notice a sound as much as when you are drivng in reverse as you usually drive slower in reverse. This leads me to think that the rattling can be caused by a loose protective plate under the car. When a load is put on the engine, it tends to vibrate more this vibration can cause a lose plate to rattle more. This is the cheap answer. That is if you are definitely sure the sound is coming from under the vehicle. Otherwise, you may have a crank shaft problem or a seal in the bottom half of the motor could be bad. You may want to crawl under the car and try to shake some of those plates underneath. If none of them are loose take the car to BMW it shouldn't cast anything for them to look at it unless they have to hook it up to the computer.
Please remember that if you intend to climb crawl under your car, you must make sure that your car is properly supported to prevent serious injury. Also, if your driving with a loose plate, it could easily fly off while driving or if you hit a bump. This could cause serious damage to your vehicle. Also, please check you oil levels and make sure you do not have an oil pressure light coming on when you hear this noise.

Jul 18, 2009 | 1999 BMW 323 Series

2 Answers

Rattling sound when I accelerate?


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Bmw 316 1993 L Reg, after losing my oil filler cap, (I drove for a couple of days before discovering cap was missing) i replaced cap, but now have erratic rpm on start up, this lasts for a minute or so...


The good news is they planned on people loosing there oil caps. This is why they put this neat little guard in the valve cover to keep the oil in the engine where it belongs. As far as the erratic idle it sounds as though it is just a fluke that it started at the same time. Try a good tune up and have the MAP sensor checked as well as the idle air speed solenoid cleaned. This should take care of the problem or lead your tech in the correct direction. Hope this helps you out. Good luck.

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2 Answers

Water came out when the oil cap was taken off on my bmw 323i


water actually came out of the oil fill cap? is there a white milky residue on the bottom side of the cap? did this happen when it suddenly got cold? if you pull out the dipstick, do you see "bubbles" on it indicating water is present in the oil pan?

i remember my 540i use to do this and there was a BMW service bulletin indicating such and it was not an issue. it only happened when it was really cold out (winter months), but then would go away in the summer. maybe that's why BMWs now have oil/water separators?

is the coolant level dropping in the overflow tank or in the radiator? if not dropping, then it may be the issue i mentioned above.

if you want piece of mind, take it somewhere for an oil change and have them put it into a separate container. if it was a head gasket that went south, then the oil & water should separate in the container and it will be obvious that jo jo jo is correct with the head gasket.

also give BMW service a call and ask if this is normal (some water vapor on the bottom side of the oil fill cap) during the winter months. hopefully its not an issue or it will be pricey to get the head gasket changed. good luck.

Jan 18, 2009 | 1999 BMW 318 ti

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