engine pressure
Printed From: Bavarian-Board.co.uk - BMW Owners Discussion Forum
Category: Technical & Model Specific Forums
Forum Name: BMW 5 Series
Forum Discription: This forum will deal with any issues on the BMW 5 Series (E12, E28, E34, E39, E60 & E61)
URL: http://www.bavarian-board.co.uk/forum_posts.asp?TID=50141
Printed Date: 02-May-2024 at 16:33
Topic: engine pressure
Posted By: jim-beamer
Subject: engine pressure
Date Posted: 31-January-2014 at 19:29
|
hi folks, can anyone help with my question... what causes over-pressure in the expansion bottle of a 98 E39..528 petrol ??? there is no emulsification of the oil on the oil filler cap, and when the expansion bottle cap is removed, the water fizzes like champagne....any thoughts ????? thank in advance jimbo PS...its not my current car, its another one I'm thinking of buying -------------  E53 X5, 2003 318i SE, Suzuki GSXR www.jgrecovery.com |
Replies:
Posted By: Indian
Date Posted: 01-February-2014 at 10:05
| Cylinder head gasket? |
Posted By: Andrew Rolland
Date Posted: 03-February-2014 at 08:22
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Other than what Indian says.....
What is the engine temp gauge like? The E39 should rise to the middle of normal and stay there and not move a mm. If it does move to the hot then something is wrong with the coolant system.
When you say over pressure is the coolant leaking past the cap?
The system is designed to be under a certain amount of pressure. If you are brave enough to take the cap off when the engine is hot or running you will always get a release of pressure.
If there signs it has leaked past the cap it could just be that the seals on the cap are perished. Even the youngest E39 will be over 10 years old now so rubber things may start to be showing signs of their age. ------------- Be exclusive and drive a Petrol 5 Series! Current '13 62 F10 535i MSport Auto Previous '04 04 E60 545i SE Auto '03 53 E60 545i SE Auto (Stolen) '98 S E39 523i SE Auto |
Posted By: jim-beamer
Date Posted: 11-February-2014 at 16:41
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thanks indian, and the temp gauge is gubbed Andrew, but turns out to be head gasket ... Anyway, I have took ages to answer cos I have been out in my garage stripping the old beast...lots n lots of nice useable parts too... cheers guys jimbo ------------- E53 X5, 2003 318i SE, Suzuki GSXR www.jgrecovery.com |