I am tryin to bleed my coolant system. In the bentley manual as well as in the forum, people say there is a bleeding point in the heater hose that goes thru the firewall. Is the hose I highlighted in the pic the heater hose one? Please Advise. Thanks.

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the hose has a small round plastic screw head this must be undone the engine run and when you have water coming throu this screw hole replace the screw................but be carefull the head of the screw can shear off leaving it impossible to remove the plastic thread.

 

Thanks for the advise! Work is done.