1990 325i M20 2" coolant hoses are rock hard when the engine is at running temp.
temp gauge is between 1/4 and 1/2
heaters blow hot air
140 psi yellow coolant cap
thin hose from rad to expansion tank is clear
anyone had this issue...?
M20 coolant pressure
Moderator: martauto
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mark_i
- E30 Zone Regular

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- Location: Widnes
bleed screw vents coolant. No air, but coolant sprays out under pressure.
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Brianmoooore
- E30 Zone Team Member

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- Joined: Mon Jan 10, 2005 11:00 pm
What makes you think you have a problem? Hoses should be fairly hard at 1.4 bar.(About 20 PSI, not 140!)
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mark_i
- E30 Zone Regular

- Posts: 972
- Joined: Thu Aug 10, 2006 11:00 pm
- Location: Widnes
compared to the M42 coolant hoses, with a 2 bar cap, the M20 hoses feel a lot harder.
However, since the engine isnt overheating, i guess there is no problem. Thanks
However, since the engine isnt overheating, i guess there is no problem. Thanks
