banni_supra Posted November 12, 2007 Share Posted November 12, 2007 well... got back from a nice meal with the mrs last night at the trafford center, about a 25 minute run, thought id just let it cool for a minute before a turned off the ignition and it started really quietly to scream as though a kettle was boiling, this just got louder and louder and clouds of smoke started to pile out of the engine bay i turned the engine off and tried to source the problem as it was pitch dark couldn't see much, then once the smoke had calmed down thought id check the water in the radiator and expansion bottle and was empty, so filled up with water to try and source where is was leaking and started her up again and ran fine, again as soon as i turned it off steam and screaming noises again looked closely and it was coming from the rear of the engine..... so next morning straight round to my mates and checked the radiator hoses and they had corroded so just for a temp job we trimmed the bad off and connected them back up, filled it back up ran it for 10 minutes turned off and again a little bit of smoke, so lifted rad cap off and it had so much pressure in it was untrue came out like there had been 12 kettles boiling in there.. so tomorrow going picking up a rad cap seeing if this helps release the pressure, and need some new hoses so anyone who has any speak now and also thinking of replacing the radiator, but in terms of the head being gone, i think im safe to say it hasn't no smoke coming from the rear, exhaust or anything and running and sounds perfect still. also the matrix hose is still heating up so thinking this isn't blocked however just to be sure going to check it isn't blocked tomorrow just wondering if anyone has anything to say about this or any help you could offer, and wanted to make sure my baby's going to be ok from your opinions ?? thanks alot Quote Link to comment Share on other sites More sharing options...
Sean1933 Posted November 12, 2007 Share Posted November 12, 2007 Well you definetly have a pressure build up for some reason. I know its hard but can you be more specific about where at the back of the engine its coming from? Replace the radiator cap for starters......... Quote Link to comment Share on other sites More sharing options...
banni_supra Posted November 12, 2007 Author Share Posted November 12, 2007 Well it looked as though it was coming from the radiator hoses at first but then we solved it by replacing the corroded pipe and then the only smoke was coming from the rad cap when we started to loosen it so could well be just the rad cap. fingers crossed. Quote Link to comment Share on other sites More sharing options...
Sean1933 Posted November 13, 2007 Share Posted November 13, 2007 In that case im pretty certain its a case of fooked rad cap, this caused a pressure buildup and it decided to release itself at the weekest point of the system...the corroded pipe. Let us know how it goes Quote Link to comment Share on other sites More sharing options...
Ian C Posted November 13, 2007 Share Posted November 13, 2007 In that case im pretty certain its a case of fooked rad cap, this caused a pressure buildup and it decided to release itself at the weekest point of the system...the corroded pipe. Let us know how it goes A worn out rad cap normally *stops* the system pressurising and you get an overheat situation as the water isn't pressurised so it boils more easily. Is the water boiling into the expansion tank or not? And is it smoke or is it steam, just to clarify (I think you mean steam, there is a world of difference in an engine bay between the two ) -Ian Quote Link to comment Share on other sites More sharing options...
Sean1933 Posted November 13, 2007 Share Posted November 13, 2007 A worn out rad cap normally *stops* the system pressurising and you get an overheat situation as the water isn't pressurised so it boils more easily. Is the water boiling into the expansion tank or not? And is it smoke or is it steam, just to clarify (I think you mean steam, there is a world of difference in an engine bay between the two ) -Ian I get what your saying Ian, im just thinking about the possibilities (however remote) based on the information presented. I had a car a while ago (celica GT4) that had pretty much the same symptoms, it kept over pressurising the coolant system. The rad cap was replaced and all was well again. As i am sure you are aware rad caps act as a pressure release valve. In most cases as you say they fail and cant hold pressure, thus dumping boiling coolant into the overflow tank. However in some cases they sieze and therefore pressure continues to rise, thus it tries to escape from the path of least resistance. In 'Banni Supra' case its the corroded pipes at the back of the engine. As you say Ian, we need to know if its boiling into the overflow tank. I assumed it wasnt as this wasnt mentioned. Quote Link to comment Share on other sites More sharing options...
Ian C Posted November 13, 2007 Share Posted November 13, 2007 Yup but the amount of coolant that expands out into the expansion tank is about 1/4 of the tankful, not a lot and probably not enough to cause the massive overpressure it sounds like is taking place in this case. It could be the rad cap sticking indeed though, I wasn't saying it can't happen I was just more thinking out loud. -Ian Quote Link to comment Share on other sites More sharing options...
Sean1933 Posted November 13, 2007 Share Posted November 13, 2007 Point taken Ian, i was just looking at it from a different angle...i have a habit of doing that . We need to know if its pissing into the expansion tank or not....its hard to diagnose without seeing the car as could be numerous things. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted November 13, 2007 Share Posted November 13, 2007 Sounds like a split heater hose at best, or a rear core plug at worst. needs fixing ASAP, otherwise HUGE bills await. I am about 50 miles away from the Trafford Centre. , (which is better than the 7 miles we were before ) Quote Link to comment Share on other sites More sharing options...
banni_supra Posted November 13, 2007 Author Share Posted November 13, 2007 Just to let you all know thanks for all the comments replaced the rad cap and all seems to be well very pleased fingers crossed anyway. However waiting on new hoses as they need to be replaced asap. thanks again everyone, great help as usual Quote Link to comment Share on other sites More sharing options...
Sean1933 Posted November 14, 2007 Share Posted November 14, 2007 No problem Quote Link to comment Share on other sites More sharing options...
magnos Posted November 16, 2007 Share Posted November 16, 2007 it happend with my radiator too,,, after a turned off the engine,i`ve seen steam front left just under the bumper..and satrt overheating.i just got the car so i didn`t o wath to do....after an hour i add 2.5 L off water,and took it to supra specialist garage.. his answer....radiator fine....went 4 aspin.....nothing....i have to add water..avery few days...any ideas? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted November 16, 2007 Share Posted November 16, 2007 You said the steam and noise was from the rear of the engine, what's that got to do with the rad cap? Quote Link to comment Share on other sites More sharing options...
supra_aero Posted June 26, 2008 Share Posted June 26, 2008 Sorry to resurrect an old post but my coolant reservoir is boiling after a mild drive.. From a search seems and is likely the radiator cap is the culprit. Would any old cheap radiator cap like this do? http://cgi.ebay.co.uk/Radiator-Cap-Badge-TRD-MR2-MRS-Supra-Corolla-Celica-RAV_W0QQitemZ250263206017QQcmdZViewItem?hash=item250263206017&_trkparms=72%3A12%7C39%3A1%7C65%3A12&_trksid=p3286.c0.m14 OR if anyone has one spare I may be interested? Quote Link to comment Share on other sites More sharing options...
Ian C Posted June 27, 2008 Share Posted June 27, 2008 Oh my word. Where to start. 1) That's a stick on badge for chavs Not a radiator cap, how hard is it to read a description? I guess this is how half the users of ebay get ripped off? 2) You need a radiator cap built for the Supra because, I'm assuming, you own a Supra. Greddy, TRD, or hey - how about a stock one from Toyota themselves. Either get a proper radiator cap or please, sell the car and get something generic and cheap which doesn't mind el cheapo maintenance and bodges. Maybe an old Astra or something. Thank you -Ian Quote Link to comment Share on other sites More sharing options...
supra_aero Posted June 27, 2008 Share Posted June 27, 2008 Oh my word. Where to start. 1) That's a stick on badge for chavs Not a radiator cap, how hard is it to read a description? I guess this is how half the users of ebay get ripped off? 2) You need a radiator cap built for the Supra because, I'm assuming, you own a Supra. Greddy, TRD, or hey - how about a stock one from Toyota themselves. Either get a proper radiator cap or please, sell the car and get something generic and cheap which doesn't mind el cheapo maintenance and bodges. Maybe an old Astra or something. Thank you -Ian O my word talk about rude. My stupidity for not reading the ebay ad but no need to post a rude unhelpful post. If you're going to be blunt so will I. Your useless comments aren't welcome. Quote Link to comment Share on other sites More sharing options...
Alex Posted June 27, 2008 Share Posted June 27, 2008 O my word talk about rude. My stupidity for not reading the ebay ad but no need to post a rude unhelpful post. If you're going to be blunt so will I. Your useless comments aren't welcome. Yes they are. The post was very helpful. It gave you the solution to your problem. HKS filters and stickers for rad caps....way to go. Quote Link to comment Share on other sites More sharing options...
supra_aero Posted June 27, 2008 Share Posted June 27, 2008 Yes they are. The post was very helpful. It gave you the solution to your problem. HKS filters and stickers for rad caps....way to go. ooo all the 10k posters are ganging up on me... I better hide. And no it was not "very" helpful. So I should start thinking about buying an Astra should I because I thought a sticker was a radiator cap. Yes...very good analysis from Ian and Alex. Spot on Quote Link to comment Share on other sites More sharing options...
Ian C Posted June 27, 2008 Share Posted June 27, 2008 No, don't get me wrong, thinking a sticker is a rad cap because you didn't read the description just means you should stop using ebay before you scam yourself. I only said you should think about buying an Astra because you said "Would any old cheap radiator cap like this do?", which is the depressing trend these days for maintaining what was a near £50k 300+bhp car. If you don't want technical advice, don't post in technical. Don't bother PMing me either, I'm uninterested in any rants justifying ruining a Supra with cheap ebay tat. -Ian Quote Link to comment Share on other sites More sharing options...
supra_aero Posted June 27, 2008 Share Posted June 27, 2008 No, don't get me wrong, thinking a sticker is a rad cap because you didn't read the description just means you should stop using ebay before you scam yourself. -Ian Fair comment Either get a proper radiator cap or please, sell the car and get something generic and cheap which doesn't mind el cheapo maintenance and bodges. I am not pming you to have a rant, surprisingly I do have better things to do. I am pming you to let you know I was not happy with the response you gave as I found it unnecessarily rude. You wouldn't speak to a member at a meet like that so don't do it behind closed doors at an internet forum. All you needed to say was thats a sticker, I'd just get the toyota one and keep off ebay stuff. No need for this 'elcheapo'/ & referencing buying an astra if you can't afford maintainance malark. End of. Quote Link to comment Share on other sites More sharing options...
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