cainhead Posted May 25, 2015 Share Posted May 25, 2015 Having a few issues with the top rad hose. Last few times I have been out in the car the hose has had all the air sucked out of it. After opening the radiator cap it goes back to its normal shape. There does not seem to be any overheating and the car drives fine. Cant see any fluid leaking. Would this just be a major airlock somewhere or something more serious. Any ideas/solutions would be much appreciated. Cheers Link to comment Share on other sites More sharing options...
Dnk Posted May 25, 2015 Share Posted May 25, 2015 There shouldn't be any air in it, is the rad cap in one piece ? Link to comment Share on other sites More sharing options...
cainhead Posted May 25, 2015 Author Share Posted May 25, 2015 Yeah it's a new one. It's full of fluid when the car is running it's after the car has been turned off. Is like it's trying to suck air out. Link to comment Share on other sites More sharing options...
Steve Posted May 25, 2015 Share Posted May 25, 2015 Where did you get the cap from? Link to comment Share on other sites More sharing options...
cainhead Posted May 25, 2015 Author Share Posted May 25, 2015 EBay I think. Could That cause the air issue. I replaced the old one as it was leaking fluid but never had this issue Link to comment Share on other sites More sharing options...
Steve Posted May 25, 2015 Share Posted May 25, 2015 If the problem started when you fitted the new rad cap, I would say thats a good place to start looking. Link to comment Share on other sites More sharing options...
Dnk Posted May 25, 2015 Share Posted May 25, 2015 Fit a genuine cap, it sounds like as its cooling down it cant draw coolant back into to system from the expansion tank Link to comment Share on other sites More sharing options...
cainhead Posted May 25, 2015 Author Share Posted May 25, 2015 If the problem started when you fitted the new rad cap, I would say thats a good place to start looking. I hear what you saying and agree fully. Just wanted to see if anyone had found the same issue and it was something more complex. But yeah should be the first place to check. Will order one up tomorrow from Toyota. Cheers to you both for your help Link to comment Share on other sites More sharing options...
Steve Posted May 25, 2015 Share Posted May 25, 2015 Report back if it resolves it Link to comment Share on other sites More sharing options...
Dnk Posted May 25, 2015 Share Posted May 25, 2015 Also check the hose that goes from the rad neck to the expansion tank is okay and the over flow pipe on the tank Link to comment Share on other sites More sharing options...
Benjy Posted May 25, 2015 Share Posted May 25, 2015 Fit a genuine cap, it sounds like as its cooling down it cant draw coolant back into to system from the expansion tank I concur. Link to comment Share on other sites More sharing options...
Dnk Posted May 25, 2015 Share Posted May 25, 2015 I concur. Link to comment Share on other sites More sharing options...
cainhead Posted May 25, 2015 Author Share Posted May 25, 2015 Report back if it resolves it Will do Link to comment Share on other sites More sharing options...
cainhead Posted May 25, 2015 Author Share Posted May 25, 2015 Also check the hose that goes from the rad neck to the expansion tank is okay and the over flow pipe on the tank Will check that also. Whilst I think about it. I relocated the expansion tank between the fmic and the radiator. Would having it below the radiator cap cause any issue with drawing the fluid? Link to comment Share on other sites More sharing options...
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