mjc86

well, i fiiiiinally got around to looking at this today. i tried a method for changing the coolant suggested in another thread. it has improved but i can still hear bubbles, they're just a lot quieter, so im assuming there's fewer of them this time. i'm going to keep an eye on how things go over the next few days and try bleeding the system again. thanks for all your help. this place really is useful. i've learnt a lot marty.

on a side note, can i just say thanks to everyone here for your suggestions. i wasn't expecting to get so many responses as quickly as i did. this is a really neat resource for subaru owners

thanks Legacy777, i'll give it another go... might not have much time this week but i'll post my results when i do get it done.

coolant level in the radiator and the reservoir is normal and still no leaks found anywhere.

i guess a faulty head gasket could cause the bubbles but the car is running smoothly, the coolant looks fine ie. there's nothing in it that shouldn't be, the thermostat is working correctly, engine oil is in good condition. the only other cause i could think of would be if the heater coil itself had a little hole in it but i ruled that out as there is no smell or signs of coolant inside the car.

the noise happens when the a/c is on and off, thats how i decided it was bubbles in the coolant. also, if i jump on the accelerator to make it change up i can hear the bubbles rushing through faster as the engine revs get higher.

Hi everyone, I'm hoping someone here could help me out. I have a '94 model Legacy that has air bubbles stuck in what I'm assuming is the heater coil. Periodically I can hear the sound of bubbles gurgling through something in centre of the dashboard towards the firewall. The noise isn't there all the time but when it is it drives me crazy. Last night a leaking water pump and the timing belt were replaced (not to try and fix this problem, it was just maintenance) but it failed to make any difference to the gurgling. I have previously replaced the coolant and tried to bleed the system to fix the gurgling but that didnt work either. There are no apparent leaks anywhere that I can see, coolant or anything else, and the car is running fine otherwise. Any suggestions? Regards, martin