Mark Ayling Posted March 25, 2002 Share Posted March 25, 2002 I posted before about fuel leaking from the bottom of my FSE valve after giving the car a good thrashing at high boost. It turned out that the "blanking nut" had apparently been worked loose, so I tightened it up and the leak went away and didn't come back....until yesterday. As I pulled out of the drive I noticed a puddle of fuel on the ground, and sure enough the leak was back, same problem. This time I removed the FSE valve for better access and tightened the nut again as much as humanly possible before putting it back on. I went for a thrash in the lovely weather, messing with the boost controller and testing out my new suspension :biggrin:, then I checked the FSE valve for a leak - no leak, and the nut was solid, so I assume its OK now. The only thing is I'm doing a trackday in Anglesey this Friday and the last thing I want is to blow the thing whilst on track... Can anyone shed any light on this, or put my mind at ease? If it keeps happening I assume I can just remove the whole thing without any problems...? Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted March 25, 2002 Share Posted March 25, 2002 Mark, not sure how this is installed but if it goes direct onto the rail then it should have a copper washer between itself and the rail to seal. These are supposed to be changed everytime you remove and re-install the associated item. It's hard to know if this is part of your problem without seeing how the FSE is installed. Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted March 25, 2002 Author Share Posted March 25, 2002 http://www.mpaconsultancy.co.uk/supra/FSEValve.jpg The nut is at the bottom of the valve, indicated by the arrow. (They're damn handy those arrows, I must pop down the arrow shop and buy some more ) Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted March 25, 2002 Share Posted March 25, 2002 Don't suppose you can take a pic across the passenger side wing focusing in on that nut area. Reason i ask is because that's nowhere near the fuel rail, so i'm not too sure what it is bolted on to. Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted March 25, 2002 Author Share Posted March 25, 2002 Quote: from Martin F on 9:46 am on Mar. 25, 2002[br] Don't suppose you can take a pic across the passenger side wing focusing in on that nut area I can't get another pic until this evening when I get home, but I have edited the original image to indicate where it is attached [embarassingly non-technical mode] At the back of the big grey block thing (which has the ETCS badge on it) there is a small lug with a screwhole in it - the FSE valve is bolted onto that.... Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted March 25, 2002 Share Posted March 25, 2002 Now this is turning into one of those diagnosis by proxy!!!! But the bottom of that FSE valve would i be right in saying that it screws into a semi-rigid pipe that disappears back down beneath the car ? Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted March 25, 2002 Author Share Posted March 25, 2002 Quote: from Martin F on 10:26 am on Mar. 25, 2002[br] Now this is turning into one of those diagnosis by proxy!!!! LOL - worth a try though, the height of laziness! On the bottom of the FSE valve (the bottom as fitted in my car anyway, red arrow) there is a nut which screws into the valve housing, like a blanking nut - no pipe. On their website this is the closest I can find to what I have (with my limited technical knowledge): http://www.mpaconsultancy.co.uk/supra/FSEValve_side-view.jpg I have "red arrowed" the blanking nut... Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted March 25, 2002 Share Posted March 25, 2002 Ah ha!!!! If all it is, is a blanking bolt, then try to obtain some PTFE tape from a good plumbing suppliers (possibly B&Q). Then take the bolt out and wrap some PTFE tape around the bolt and screw back into valve. That should stop it, although it's possible that over time the petrol will find it's way past the tape but i guess that will be in many months time. You could use thread lock insteadf if you have any. Strange how if this is fitted at manufacturer how it has started leaking. One thing you do not want under a bonnet is a fuel leak....:o Quote Link to comment Share on other sites More sharing options...
Adam W Posted March 25, 2002 Share Posted March 25, 2002 I would recommend Araldite, assuming it doesn't get too hot and you don't ever need to get that bolt out again. Put some on the threads, and then a big blob around the head of the bolt. Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted March 25, 2002 Author Share Posted March 25, 2002 Quote: from Martin F on 11:25 am on Mar. 25, 2002[br] One thing you do not want under a bonnet is a fuel leak....:o Tell me about it!! I did wonder about using thread lock or something, I think thats what I'll do. A couple more questions: Is it going to pee with fuel when I fully remove the nut? Adam, you say "as long as it doesn't get too hot" - a) does it get hot? and b) what will happen if it does....? Quote Link to comment Share on other sites More sharing options...
Guest Martin F Posted March 25, 2002 Share Posted March 25, 2002 Yes it is going to piss with fuel a bit when you remove it. You can de-pressurise the system a bit if you can remove the supply to the fuel pump as the car idles, but i'm not sure which fuse does this (bit hard to check at work ) It shouldn't be a problem as long as the engine is not hot and there is nothing cosmetically pretty nearby. Araldite would probably do the job as good as threadlock. Quote Link to comment Share on other sites More sharing options...
Mark Ayling Posted March 25, 2002 Author Share Posted March 25, 2002 Thanks for all your help - glad to see I'm not the only saddo who sits on the BBS all day! Cheers, Mark. Quote Link to comment Share on other sites More sharing options...
Adam W Posted March 25, 2002 Share Posted March 25, 2002 Araldite will melt and go runny when it gets hot, but set again when it cools. I have a splotch of it over a crack in my radiator, which gets hot enough for it to go tacky but not melt completely. That's probably one of the hottest points in the engine bay so you shoul be alright. Quote Link to comment Share on other sites More sharing options...
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