ok ever since i have owned the car i have noticed it fails to pull coolant from the recovery tank, i have replaced the Rad cap, and the Coolant res. cap. The other day i noticed an odd thing, after doing a front brake job ( Bendix Titaniumetallics) i started the enginge with the cap off, and noticed the coolant foamed, now to me this is an indication of a blown head gasket, however there is no signs of water in the oil or the Trans, Engine runs smooth and clean at all times, and no moisture out the exhaust, as the engine warmed coolant level dropped in the rad so i kept adding ( and yes the resv. is full as well since it is not pulling it back). When the engine reached 163* the level quit dropping and the foaming quit. :confused:

Engine has never over heated ( am in Florida ) Highest temp i have ever seen out of it is approx. 202* in stop and go traffic last summer. Temp. dropped right back to around 188* when i started moving again.

I should note that the fan control is bypassed ( always on ) and Thermostat is apperantly removed ( Coolant flow through Rad at all times) by previous owner.

Any thoughts on this... :confused:

 

An exhaust leak in the head gasket into the cooling system would not leave any signs in your tranny or engine oil, but it would cause overheating, displacement of coolant into the overflow bottle, and prevent a siphon from occuring. Since you do not have an overheating problem, a head gasket leak doesn't seem to be your problem. How long has it been since you have replaced the coolant? If the coolant has been is service for several years, that may be the cause of the foaming action, especially if additives are involved. The coolant flow can develop bubbles when you first start up a cold engine caused by the cavitation of the water pump impellor. You aren't sure if there is a thermostat installed, but you say the bubbles disappear and the coolant level drops after the engine warms up, which would indicate that there is a thermostat. The bubbles would not disappear if there was a head gasket leak. Check your return line from the bottle to the radiator for solid connections. Any air leak will prevent a siphon. Remove the return line end at the radiator, and blow into it. You should see bubbles in the bottle. If no bubbles, there is a restriction in the line. Check the pick-up end in the bottle for any debris or restriction. Make sure that the end of the line is submerged. One check you can do after the engine has cooled down after running, is slowly loosen the radiator cap, keeping your ear near the cap, and listen for any pressure escaping when you break the seal. If there is pressure when you break the seal of the cap with a cold engine, it is likely that there is a leak in the exhaust head gasket. The siphon action is not magic. All that is required is a closed-system radiator cap, a secure (no air leaks) connection of the return line at the radiator, and a recovery container. The container does not need to be sealed. You can siphon coolant from any open container, as long as the pick-up tube is submerged at all times. Good luck............

 

:iagree: It could be as simple as a pluged overlow tube.Good Luck!!!!

 

If the thermostat is removed, put one back in!! It's there for a reason! You're seeing foaming because the water is moving way to fast through the system. That can cause cavitation at the pump and air pockets in the passages. Read this: http://performanceunlimited.com/illu...ermostats.html
:cheers:

 

:iagree:
It's a system, it needs all the parts.