E30 Zone

Quick question

Why would the coolant level on my 320 rise and fall.

Whenever I check the coolant level it is different, one day it will be on the line, the next 1/2 - 1cm above another it will be 1/2cm below.

Does not overheat, no mayo and no other problems.

Cheers Bri

Not an expert so please correct me if wrong, however should it not rise and fall somewhat due to certain conditions - temperature etc?

best

Pauly

The level will get higher when the engine gets warmer, and fall as it cools, this is normal..

Sorry, wasn't very clear.

This is when I give the engine a once over before using it, so from cold.

Could an air in the system cause these symptoms?

Cheers Bri

bttt

air- possibly yes.
Is the car always parked on the level?

When I refill mine, I always place a halfords flexi hose into the filler neck and blow hard. This helps expel some trapped air.
I always like to point up a steep hill to refill and bleed as well. This always seems to help.

You may scoff, but Tommy316i replaced his stat, temp senders, viscous link and all sorts before I bled his cooling system this way. He has not looked back since.

You may have a dodgy thermostat, which could be trapping coolant on the cabin side of the circuit sometimes, leaving air in the engine side, then vice-versa...

Or... your heater controls may not be set at the same setting everytime you check/ bleed the coolant...

Thanks John

I will see if bleeding it again sorts this out.