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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 11-02-2009, 04:17 PM
rndj rndj is offline
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Location: Belfast, Northern Ireland
 
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Mein Auto: BMW 318is Coupe
Exclamation How much Pressure?

Hi everyone,

My car is a 97 E36 318i

How pressurised should the top radiator hose be after an hour or so of driving?

The reason i ask is because i recently had the car overheat and as a result the head gasket failed. I put a new radiator, water pump, thermostat, hoses, head gasket and had the head skimmed / machined.

After putting everything together and filling and bleeding the coolant now the car seems to build up alot of pressure in the top radiator hose after 30 - 40 mins of driving, to squeeze the hose at this point takes a fair bit of effort.

So i was just wondering how pressurised it should be

Thanks

Last edited by rndj; 11-02-2009 at 04:21 PM. Reason: additional info
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  #2  
Old 11-02-2009, 05:08 PM
GermanEngineerd GermanEngineerd is offline
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Location: Houston, Texas
 
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you problably have an air bubble trying to get out open the cap and start the car from a cold start and once it warms up the air bubble should be released by then
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  #3  
Old 11-02-2009, 07:47 PM
rndj rndj is offline
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thank you for your reply, i'll try it in the morning
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  #4  
Old 11-02-2009, 07:48 PM
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It *should* take a fair bit of effort to squeeze it.
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  #5  
Old 11-03-2009, 04:38 AM
heliman53 heliman53 is offline
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System should have pressure when up to temp usually about 12 to 17psi, this raises the boiling point of the coolant. Craig B
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  #6  
Old 11-03-2009, 06:34 AM
rndj rndj is offline
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Thanks for all the replies guys
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