Hi again! Okay, the radiator is staying full. I have not replaced the cap - haven't got that far yet. I really think the system needs to be burped and since I'm desperate to get my car back I just tried it. The cars temp guage stopped rising at 210 degrees but the collant didn't start flowing through the system. This is what I tried -
1. Filled the radiator to top
2. Filled the over flow reservior with water to the to full line (will drain some later and add some 100% coolant to fix this - don't have a way to the store to get coolant today and need to get this going).
3. With the radiator cap off started the engine.
4. Keeping a close eye on the engine temp guage watched for air bubbles and to see if flow started.
Even though the temp gusge stopped at 210, I was afraid to run the engine too long.
This is what I saw. The coolant overflowed from the top of the radiator after about 3 minutes (the cap was off). It did not boil over just overflowed some. I noticed a few air bubbles. Then the fluid dropped down into the radiator. I added a little more when this happened. It overflowed a little again. I could see the coolant go up and down and some small dime and quarter size air bubbles. The engine temp stopped rising at 210 but the fluid did not seem to be circulation through the system. The cab heater did not start blowing hot air and the water in the overflow resevior did not drain out (the clear water stayed in and was not replaced or mixed with the green coolant from the radiator). We have already replaced the thermostat (a few days ago). I'm wondering if I didn't run it long enough to get the coolant flowing? I'm planning to let the engine cool and try it again with the front end of the car raised. I have not checked the pressure or had a chemical test done to check the engine. Is there any danger in damaging the engine by doing this if the I watch the guage close? Does the engine need to run longer to open the thermostat valve? You asked about the radiator cap - do I need to do any of this with the cap on? Thanks so much!
Friday, January 8th, 2010 AT 12:14 PM