DD40 Dan Posted October 1, 2011 Share Posted October 1, 2011 hi all and thankyou for reading... ive just bought a 50cc 2003 aerox that has been of the road since 2004. filled the header tank up which took barley anything, i thought as i was filling it the coolant would go through the pipes but it never just filled the tank. road it today and the temp light came on, all pipes are hot but water in the tank isnt hot at all. could the pump be nackerd or just an airlock? and is there a bleed valve on the head? PLEASE HELP!! Link to comment Share on other sites More sharing options...
Moderator Airhead Posted October 1, 2011 Moderator Share Posted October 1, 2011 the tank wont get hot Dan, let it all cool and check the level in the radiator if you can...must be cold though! Link to comment Share on other sites More sharing options...
YPVS TONE Posted October 1, 2011 Share Posted October 1, 2011 If it's been stood that long possibly a stuck thermostat. Does the radiator feel hot when it has been run ? Link to comment Share on other sites More sharing options...
DD40 Dan Posted October 1, 2011 Author Share Posted October 1, 2011 Ok just took it on another run and water in the tank is hot so I know the pump is working and this time the light didn't come on. Could it of just been a stuck thermostat that has now unstuck itself after a run? And if the pump is working so the engine is getting water to cool it can it still overheat? Like if the warning light comes on but I know the pump is working should I worry or just put it down to a faulty light? Link to comment Share on other sites More sharing options...
DD40 Dan Posted October 1, 2011 Author Share Posted October 1, 2011 Yes water level is still full and rad was hot Link to comment Share on other sites More sharing options...
Moderator Airhead Posted October 1, 2011 Moderator Share Posted October 1, 2011 i dont think water in the tank should be all that hot, hard to say but its only an expansion tank!! beware if it gets hot as you say, blown head gasket can do that trust in the light, it either works or doesnt, if it says hot it is hot and theres a reason for it Link to comment Share on other sites More sharing options...
YPVS TONE Posted October 1, 2011 Share Posted October 1, 2011 Sounds like the stat was stuck closed as suggested and it's freed itself. Has the rad got a "Rad cap" on it if not has the expansion cap got a pressure rating on it ? Is so then the system will be pressurised by the cap on the expansion bottle. Just keep an eye on the level in the bottle as it shouldn't really alter as it is a "sealed system". Check it with the engine cold and make sure the level is between upper and lower levels. Link to comment Share on other sites More sharing options...
DD40 Dan Posted October 1, 2011 Author Share Posted October 1, 2011 Thanks all will do as suggested. One more thing .... now that the water has circled the engine a few times it is really black and shitty, guessing because it's been sat to long so thinking of taking off bottom hose to flush it out then refill it. Or am u running the risk of giving it a air lock? Also I'm taking it for granted that the oil pump is working, it smokes a bit when she starts and seem to be running fine so safe to say it's working? Link to comment Share on other sites More sharing options...
Moderator Airhead Posted October 1, 2011 Moderator Share Posted October 1, 2011 yeah keep filling, running, draining etc and eventually the water should be clean, only then drain a last time and fill with de-ionised (distilled) water and anti-freeze solution...winters coming . In the shrt term keep an eye on the level in the radiator when its cold untill you have some confidence in it. Tip, when filling a drained system keep squeezing (pumping) any exposed rubber hoses to expel air and reduce the chances of airlocks Link to comment Share on other sites More sharing options...
DD40 Dan Posted October 1, 2011 Author Share Posted October 1, 2011 Thank you will do that. Any ideas on the oil pump? Link to comment Share on other sites More sharing options...
Moderator Airhead Posted October 1, 2011 Moderator Share Posted October 1, 2011 you can test the pump if youre not sure, pull the pipe from the carb or manifold, block off the spigot with something (not bluetac etc) maybe a pice of tape. start the bike and allow it to idle, turn the pump puuey by hand to max a see if the oil pulses out of the pipe, is the oil clean? how about the 'Intro' Dan? Link to comment Share on other sites More sharing options...
DD40 Dan Posted October 2, 2011 Author Share Posted October 2, 2011 Intro? Yeah oil is nice and clean. Was going to change it but was advised it would be ok as oil doesn't really go off Link to comment Share on other sites More sharing options...
Moderator Airhead Posted October 2, 2011 Moderator Share Posted October 2, 2011 Intro? Yeah oil is nice and clean. Was going to change it but was advised it would be ok as oil doesn't really go off yean an intro in 'New Members' its good manners you see, rather than here I am fix my bike! Link to comment Share on other sites More sharing options...
01-aerox-kid Posted November 21, 2011 Share Posted November 21, 2011 simular thing with mine, mthe crank turning the water pump had sheard off insite the little fan looking thing, so it wasn't pumping water..... easy bodge - arodyte it in Link to comment Share on other sites More sharing options...
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