Coolant Level in filler neck?

[ztlonewolf]

here's something you can try,when your car is cold,take off the cap,start the car and fill the radiater while the car is running,let it run until the thermostat opens up,the coolant level will drop,put in more coolant (just enough to fill it up to the top),once the coolant level starts to rise,put the cap back on the radiator and run it.that should take care of any air bubbles that may be in your system,once the car is cold again,check your levels and see if that helped.

[CB900F2]

Thanks wolf I will give it a try..

But the funny thing is my fluid level in my overflow bottle will rise about 1inch when the coolant becomes hot, and will also then lower when the engine cools off...so it seems fluid is flowing between the system and the overflow bottle..

thanks again!

Originally Posted by ztlonewolf

here's something you can try,when your car is cold,take off the cap,start the car and fill the radiater while the car is running,let it run until the thermostat opens up,the coolant level will drop,put in more coolant (just enough to fill it up to the top),once the coolant level starts to rise,put the cap back on the radiator and run it.that should take care of any air bubbles that may be in your system,once the car is cold again,check your levels and see if that helped.

[Snappy]

When the engine is cold, try squeezing the upper radiator hose. I had a bad cap, and the same low fluid problem you have on one of my two 2007s. When you squeeze the hose, see if you hear/feel the air compressing in the filler neck, I got some give then a faint click. I replaced the cap (cheap for a Toyota part!) and no more problems. Also, I could squeeze the hose with the cap off, bringing the coolant level up to the top, then put the cap on, but when I checked again after driving and letting the car cool down, the low level returned.