Re: Gurgling water sound
Thanks all. I'm kinda leaning more towards disconnecting the heater hoses to the core at the firewall and flushing the core directly instead of flushing the entire system. I installed the manifold upgrade about one and a half years ago and also installed all new hoses, thermostat, and a flushing tee at the same time. I've always kept the coolant tank filled to rule out air pockets. I had the gurgling sound before as well as after the upgrade, so the heater core is pretty much all that is left to check. Thanks again.