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  1. #11
    Join Date
    Jan 2006
    Location
    Home: Lancashire, Boat: Chichester
    Posts
    45

    Default Re: Volvo Engine Cooling System

    I had a similar problem on my 2020 which was quite simply the screw down lid to the raw water filter not having been tightened down tightly enough to make an air tight seal. Air was consequently being drawn into the system which seems to explain your problem. Could be worth a try given the problem has only occured since the service and you sound confident that the new impellor is good.

  2. #12
    Join Date
    Jun 2001
    Location
    South London
    Posts
    1,185

    Default Re: Volvo Engine Cooling System

    Do they all have the seal ?? I don't remember having one, and it works fine, but I do have a speedseal.

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