<span class="highlight">Radiator</span> water wont syphoon back into <span class="highlight">Radiator</span>

Hi George,

Might pay to check the condition of the hose from the radiator to the overflow bottle. If its gone soft, got a hole in it or just leaking at the connections, when the radiaotr cools down and trys to suck the water back, it will only suck air or collapse the hose instead.

Cheers

Captain

Hi George,

You have a number of things to check.

1) Radiator cap and seals (Must be in good condition and soft in order to have a vacuum to pull the water back into the engine when it cools)

2) The Plastic elbow cap on the expansion bottle. (It is very common for these to crack and suck air instead of water)

3) Expansion bottle dip tube. (These swell and also suck air around the fitting)

4) Last but the worst..... Head gasket failure or cracked head. (Do this test... remove the radiator cap, allow the engine to idle until hot and top up the radiator till level with the filler cap. Increase the idle speed and watch for small champagne type bubbles. If these appear then have the head pressure tested.)

Hope #4 is not the case but I have seen it a lot.

Regards Derek.

make sure you have the right rad cap ( recovery type )

Sorry to say that I had the same problem with my Toyota, I had a cracked head that took an xray to find, even passed a co2 and pressure test by a radiator specialist. Took four weeks to find and in the end the only way was to pull of the head and have it xrayed.

If you find this is the case have your injectors checked as it was faulty injectors that caused the issue. I did not and 2 months afte getting the head fixed I had have an engine rebuild after no5 pot failed with a hole in it.

good luck