I live in california i want to buy a car in arizona do i pay a sales tax? Number of Reviews 14. It is rather faint and it goes away when I either let off the gas or my speed is constant. I only recently got the vehicle and I'm thus not too familiar with what's normal and what's not.
It's common to hear gurgling under the dash if there's air in the system -- coming from the heater core. Air can be sometimes naturally trapped inside the system so look for a bleeder screw on one of the cooling system components such as the thermostat housing. Your expansion tank is connected to the radiator, usually by a hose through the radiator cap, but sometimes in another location. I hear it more while driving for a while on the interstate and then accelerating a little, like to switch lanes, etc.
Rating Summary. He then diagnosed the issue and wrote up a report with quote for the repair. There are also bleeder valves located on the coolant lines notably at the back of the engine that let you bleed air out. If it is engine knock…it could destroy your engine. Yes, I think this is exactly what it was!!!
This is normal and should not be thought as a problem. He was great, knowkedgable and professional. Engines are a lot like the human body, which is a pretty noisy thing if you listen closely enough.
If you think it might be engine knock, you can test it by putting in high octane gas. In the last 500 miles, I recently starting hearing a gurgling noise when I accelerate. In this case, the sound you're hearing may just be water and steam moving to and from the coolant overflow bottle, or through the cooling passages.
I have 96 Chevy Blazer automatic that's been making a slight gurgling noise sounds like water - think "babbling brook". Keep an eye on the coolant level and you should see air bubbles come up and the level drop as it "burps". If the fluid level is low it can pull air into the system causing a gurgling noise due to the air bubbles in the system.
Check the coolant with the radiator cap open; if you see oil floating on top, or smell gasoline with the engine running, you may have a serious problem in the bowels of the beast.