Matt16

I get a distinct gurgling sound from behind the radio roughly when I start my truck. Is this the sound of a radiator in need of burping?

just a 22re

well i have this same thing its when the coolant gets low its flushes like that though the heater core and yes i know its not good but then again its not burning it nor leaking anything so i have no idea where my coolant is going but yeah a good burp and she should be fine i just didnt get around to letting it do that in a wile

Matt16

I usually tell my passengers that the sounds is battery fluid going to the radio. SOme people actually believe me too.

Do you burp the system via the rad cap, or what?

just a 22re

yeah thats the way i do do it but yeah i need to do mine all the way ie more then one opening of the t-stat i missed half of the first one do to some one yelling in the back round so i looked and when i looked back it opened lol

just a 22re

oh man now thats a good one!! lol

Jay351

Mine used to do that ALOT before I changed out my leaky rad and burped the system.

Just jack up the front end a good ft or two if you can, open the rad cap, set the heater to hot and start the truck. Let it run till its at operating temp and that should get all the air out.

just a 22re

yeah that there is about it

hmmwv15

I always thought I had a hobo living behind my radio.

Kinked

will burping the rad also stop the water sound when i accelerate?

Jay351

It should. That water sound is air in the lines. Make sure you dont have any leaks, if coolant can get out, air can get in. Then you are just wasting your time.