DaveM Posted April 27, 2006 Share Posted April 27, 2006 I have gone to start the car up this morning and am getting a strong smell of petrol. On investigation it looks as if the leak is on the FSE Power Boost Valve and probably coming through one of the two nuts on top of the valve (the top nut was loose). I have just done a quick search on here and can see that these valves have a history of leaking and now have it as my number one priority to change back to the original FPR. However I need to get this immediate problem fixed and make the car safe to drive. The main question is do the two nuts on the top of the valve adjust anything as I am worried about tightening them up, adjusting the fuel pressure and making the engine go bang. Quote Link to comment Share on other sites More sharing options...
Wez Posted April 27, 2006 Share Posted April 27, 2006 The lower nut adjusts the pressure and the upper nut is a locking nut so it doesnt move Quote Link to comment Share on other sites More sharing options...
DaveM Posted April 27, 2006 Author Share Posted April 27, 2006 Hopefully tightening the locknut will stop the leak. If I need to remove any of the petrol hoses from the power boost valve do I need to do anything to depressurise the fuel injection system (to stop petrol spraying everywhere) or am I okay providing the ignition is not switched on? Quote Link to comment Share on other sites More sharing options...
Wez Posted April 27, 2006 Share Posted April 27, 2006 I normally just crack it open with a rag wrapped round it, i am guessing not ideal but done it a few times without issue. Quote Link to comment Share on other sites More sharing options...
Bob Posted April 27, 2006 Share Posted April 27, 2006 Remove the fuel pump fuse first (not sure which one it is though!) and crank the engine a couple of times to depressurise the system. Quote Link to comment Share on other sites More sharing options...
Guru Posted April 27, 2006 Share Posted April 27, 2006 Sorry I can't help directly but I have one for sale if you need to replace it..... http://www.mkivsupra.net/vbb/showthread.php?t=64567 Quote Link to comment Share on other sites More sharing options...
DaveM Posted April 27, 2006 Author Share Posted April 27, 2006 Tightening the lock nut has stopped the fuel leak, it just makes me feel a little uneasy about whether it will start leaking again and cause some engine damage (or worse). To be honest if I replace it with anything it ill be the stock FPR. Thanks for help Quote Link to comment Share on other sites More sharing options...
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