Subject says it all.

I don't appear to have a coolant leak and my cooling sys is otherwise performing perfectly.

But when I slide the heat all the way up and drive around at about 2800-3000 revs I can hear coolant gurgling away and it is making me NUTS!

Any suggestions on nixing this annoyance?

 

Perhaps the modified Coolant Flush you speak so highly of?

 

what is this modified coolant flush u speak of?

 

Don't ******' start with me!

 

This is what he's talking about.


https://www.rx7club.com/forum/showth...hreadid=132011


And I still stand by everything I said in that thread.

 

Be prepared to make a coffee and have a looong wait. X-amount of bullshit that flies In that thread.

But seriously, how Is your Heaters output? Any difference? Perhaps your Heater core Is clogged.

 

Lots of heat - it's normal.

I'm hoping that it's not the core - I don't want to wind up having to yank the dash (I hear it's a nightmare.)

 

Okay, good to know. I suggested that b'c that would be the nearest "cooling" component you would hear, as for when you are In the cabin.

 

 

 

My new theory.

Maybe the heater core has a hole in it. So when the coolant is flowing through at a good pace the core sucks air and causes turbulence, which I hear as the gurgle.

I'm strongly suspecting this as I've been noticing that hated coolant smell inside the car recently.

I'd rather not use stop-leak. I don't want to fill up the sys with goop.

Any comments on using stop-leak to at least buy some time?