2010 Subaru Impreza Percolator Sounds with Cold startup

[sahouse]

When I first start my vehicle in the morning, it makes a sound like a coffee percolator (like a chirping sound).  What could be the cause of this? 

[mikaleda]

My first guess would be air in the cooling system. Subarus can be hard to burp out at times

[1 Lucky Texan]

def. check the radiator level - safely, when the engine is cool. actually look in the rad - don't trust the overflow bottle.

 

not sure from how you are describing the sound - could this be a slipping accessory belt?

 

or, does it really sound like a fluid?

 

maybe open the hood and have someone else start the car and listen. If it's louder inside the car, could be something with the coolant, a/c or fuel tank. If it's louder under the hood, maybe a slipping belt or.....?

 

 

also, next morning before starting, remove the gas cap. note any pressure in there, start the car.

Edited September 24, 2015 by 1 Lucky Texan