Marco79 Posted July 3, 2011 Share Posted July 3, 2011 Hi all I'm posting here as I'm now running out ideas lol I was out driving and the car was running sweet, just some motorway driving and on the way home I noticed if I backed off the go pedal there was serious deceleration, came off at the roundabout and it just died at the lights! Took a min of cranking to start her again and had to hold her above 2500rpm to keep running and there was a definite power loss above that Over the following days I've checked the O2 sensors both failed the voltage checks so I replaced them, took all the plugs out and they were thick black and the pistons are black aswell (plugs are iridiums 10000 miles old) while plugs were being done I did compression check and all were between 168 and 175 psi so all Is good there. Forgot to mention the oil is clean so from this I can't see any problems with the block or gasket There are no codes stored and no lights coming on (yes they all work lol) Rotor arm and dizzy cap are new and all Ht leads are good Cam tdc points still line up correctly When it's running (with throttle held open) light black smoke comes out the exhaust with specks of fuel coming out (and a stink of fuel) which I'm sure is the cause of all my probs but any ideas where to go next? I've read on some supra forums if an na is running silly rich it's normally the ecu an anyone here confirm this? All and any help really appreciated with this Link to comment Share on other sites More sharing options...
Dr_Doom Posted July 3, 2011 Share Posted July 3, 2011 Sorry to hear you're having problems mate! Hope you can get it sorted easily? Might be worth trying another ECU to rule that out, hopeful someone has a spare one that you can borrow? Link to comment Share on other sites More sharing options...
Marco79 Posted July 3, 2011 Author Share Posted July 3, 2011 Sorry to hear you're having problems mate! Hope you can get it sorted easily? Might be worth trying another ECU to rule that out, hopeful someone has a spare one that you can borrow? Thanks mate fingers crossed someone here can shed some light, a donor manual ecu would be great just to diagnose the problem lol Link to comment Share on other sites More sharing options...
Marco79 Posted July 5, 2011 Author Share Posted July 5, 2011 Got an ecu coming from keron so hope that will fix it or I've no idea what to do next? Link to comment Share on other sites More sharing options...
supra matt Posted July 5, 2011 Share Posted July 5, 2011 Could be your fuel pressure reg mate is it a stock one? Link to comment Share on other sites More sharing options...
Marco79 Posted July 5, 2011 Author Share Posted July 5, 2011 Could be your fuel pressure reg mate is it a stock one? /QUOTE] Yes it's stock mate, where is the preassure reg located and is it a mechanical or electrical unit? It wud explain a lot if that was faulty bud Link to comment Share on other sites More sharing options...
supra matt Posted July 5, 2011 Share Posted July 5, 2011 It's mec mate not sure where it is on the n/a but should be on the end of the fuel rail. Link to comment Share on other sites More sharing options...
Marco79 Posted July 5, 2011 Author Share Posted July 5, 2011 It's mec mate not sure where it is on the n/a but should be on the end of the fuel rail. /QUOTE] Thanks mate will look into that Link to comment Share on other sites More sharing options...
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