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Heater core flow rate

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mcrites

Member
Joined
Jul 20, 2001
Location
Herndon, VA
I haven't seen much talk about this, but I was wondering how much water should be coming out of the intake valve of a heater core? Should it fill the entire hose up, or should it just be trickling due to the size of the passes inside the core?
 

KingB

Member
Joined
Jan 29, 2002
Location
Calgary, Alberta
Once you get all the air air of the system, the hose should be completely full regardless of the flow rate. It sounds to me that you have air in your system.

BTW heater cores are generally regarded as one of the least restrictive radiators when it comes to flow.