MX-3.com

This is my problem my rad was running fine 2 weeks ago.. since ijust got the car i decided to do a rad flush... now im getting continuous bubbles building up and constant overflow from the resivour... i put new rad caps on and i noticed taht bubbles are coming out of hte fluid from the filler cap only... what are some possiblities??

You have to burp the air bubbles when you do a flush, I believe the manual covers it.

what do u mean by burp the air bubbles?? is it different then bleeding the line?

http://mx-3.com/manuals/showimg.php?fil ... E2-006.gif" onclick="window.open(this.href);return false;

welll i replaced the thermostat thinking that was the problem.. but i tried bleeding for an hour and nothing still getting small bubbles and all new hosing and clamps

any possibilities?? jw if its possible for the rad to let air in without losing fluidss or i dont notice it?? or is it possible for the head gasket to leak enough for air to be let in? because it seems taht all the fluid is just beign pushed out the overflow resivoir do to collecting air at the filler cap

If you've followed the service manual procedure for purging air from the coolant system then there must be a leak somewhere. What you need to do is rent or borrow a coolant system pressure tester. Auto part stores that rent tools will offer one so will many tool rental places. They are really easy to use. You close off your fill neck on the engine and attach the pressure tester where the cap is on the radiator. It works like a bicycle tire pump. You pressurize the system and then look for leaks.

just wondering is it possible to get bubbles in the collant with a bad intake manifold gasket?

No, you'd have a vacuum leak, there are no coolant passages between the IM and the heads.

I just removed my radiator for access yesterday, and put it back on. Refilled, ran to warm, topped it off, then took it for a short road run. After I got back, and the engine cooled, it had pulled most of the coolent from the overflow. I refilled the overflow, and all is fine.

your case puzzles me.

Jim

well i think i found the problem... there is a passage for collant to run .. just two small whole on the head which have collant running through it. and my intake gasket was leaking it out pretty bad

Is it possible for the headgasket to leak antifreeze to cause bubbles without entiring the oil?

This is becoming frustrating. Is your car overheating or not? If it's not I would say don't even worry about it, it will probably end up working itself out.

ya it overheats after 30 min of driving

If the problem doesn't seem to be visible another posibility could be the water pump.