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E34 (1989 - 1995)

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  #1  
Old 07-21-2012, 05:27 PM
bimmer246 bimmer246 is offline
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Need help ,have more problems with my m30 engine

my m30 engine head was removed a couple months ago it got cut and refitted now when i had gotten down to the final torque stage which is the 35 degree . when i ran the engine for 10 minutes it started to over heat and burst a water hose that goes to the coolant bottle. could this mean my head gasket is blown? Could some one help me on this matter?
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  #2  
Old 07-21-2012, 06:21 PM
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Radian Radian is offline
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Did you get a chance to shut it off as soon as you noticed the burst hose?
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  #3  
Old 07-21-2012, 06:48 PM
snowsled7 snowsled7 is offline
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You should run the engine with the pressure cap removed until air is purged from the cooling system. Air in the system likely caused a hot spot which caused enough pressure to blow the hose.
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  #4  
Old 07-21-2012, 10:22 PM
MySatinDoll MySatinDoll is offline
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(raising my hand) before you started the car did you fill and bleed the system properly.
I agree sounds like you have air in the line somewhere.

If you did bleed the system did you:

do it with car started,
heat on high,
cap of reso,
pour coolant till it either bubbles (keep pouring) or rises,
put cap back on when coolant begain to rise,
Shut car down,
turn bleed screw to let air out.
Repeat till bleed screw spews nothing but pure coolant without bubbles or steam

???
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  #5  
Old 08-11-2012, 08:25 PM
bimmer246 bimmer246 is offline
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Thanks guys i guess i did not bleed it properly, will replace hose and try again. another thing when i was doing all of this i realized the temperature gauge was not reading, would that be the case if the system was not bleed properly?
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  #6  
Old 08-12-2012, 11:32 PM
Josh429er Josh429er is offline
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Never heard of are in a cooling system causing a hose to blow off. And I've flushed cooling systems many a time.
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Old 08-12-2012, 11:54 PM
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Quote:
Originally Posted by snowsled7 View Post
You should run the engine with the pressure cap removed....
AND with the coolant bleed port open (the bolt on top of the T-stat housing)...otherwise the reservoir will begin to overflow as the engine warms.
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Old 08-21-2012, 09:58 PM
paperplane94 paperplane94 is offline
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Find your thermostat housing.

There should be two temp sensors in it. A blue one, and a brown or black one.

MAke sure the brown or black one is plugged in to its respective brown or black connector. That gives you engine temp.


See the two sensors on the right hand side of the pic?
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