paulc555 Posted January 7, 2008 Posted January 7, 2008 Posting on behalf of my brother in law in belfast.... car is a 96P Sti.....he text me this morning to say he had lost all boost pressure...... got a further text this afternoon to say that the wastegate rod (whatever that is....) had been disconnected which he has now put back on and still no boost.... he is a mechanic but not on subarus......so just to save him ripping the engine apart...any ideas of the likely causes.... so lets list the top 5-10 things he could check first......... straight in at no 1 would be ? thanks for your help team.... Paul
4Hero Posted January 7, 2008 Posted January 7, 2008 straight in at no 1 would be ? 1. Make a cup of tea 2. sorry, crap with technical stuff, don't even know how to lift the bonnet thing. Good luck though.
paulc555 Posted January 7, 2008 Author Posted January 7, 2008 4hero said: straight in at no 1 would be ?1. Make a cup of tea 2. sorry, crap with technical stuff, don't even know how to lift the bonnet thing. Good luck though. thanks for your assistance mate ......ever thought of the samaritans...
wilky Posted January 7, 2008 Posted January 7, 2008 It takes a fair bit of buggering about to disconnect the rod between the actuator and the wastegate arm, unless the linkage pin had sheared. The fact that he has reconnected it and there is still no boost would suggest that the actuator is knackered, and leaving the waste gate in the open position,or the actuator is offering no resistance and allowing no pressure to build up. If this makes no sense phone me Paul and ill explain it. Also why was the arm disconnected in the first place? Now that its re connected maybe its not adjusted correctly and leaving the penny slack allowing boost to escape. Maybe the penny has come loose Im sure I read about someone actually losing the penny down the exhaust (The "penny" is the actual gate of the whole thing , ie the bit on the downpipe side of the turbo that opens and closes, controlled by the actuator which pushes the arm when the boost solinoid gives it pressure after saying "There you go! thats us at 15 psi better start bleeding some off or well blow the lot!") The actuator resistence can be checked by pushing the rod in the open direction of the wastegate arm, if there is hardly any resistance then its fecked, if its mega hard chances are its okay. If all is good with the above then start working back from there, boost solinoid, boost leak from pipework, boost leak from intercooler etc etc. My money is on the actuator or something in that area, seeing as it was disconnected. Its been ages since I even looked at a subaru so if Im wrong Im quite sure there are plenty people out there desperate to point it out. To them, get it up ye! To you Paul I hope You get it solved. Callum W
jodie typeRA Posted January 7, 2008 Posted January 7, 2008 PaulC555 said: thanks for your assistance mate ......ever thought of the samaritans... ok i will go second has the circlip that holds the actuator arm came off ? = wastgate stuck open....
paulc555 Posted January 7, 2008 Author Posted January 7, 2008 jodie typeRA said: ok i will go second has the circlip that holds the actuator arm came off ? = wastgate stuck open.... Thanks for the responses guys.....excellent description Wilky...will give him a buzz now and read it out to him......you should pop over some time and see the car..... Paul
paulc555 Posted January 7, 2008 Author Posted January 7, 2008 I've just spoken to him....and he has been working all afternoon on it.....it seems it was indeed the clip holding the actuator arm had sheared....all sorted now and boost is back.... one final question though.... He has asked if he puts a Fuel Pressure Regulator on what pressure can he run it at...??? means heeeee haw to me, but said I would ask.... thanks again one and all... Paul
paulc555 Posted January 8, 2008 Author Posted January 8, 2008 thanks Peter.... anyone else care to comment before I ring him.. thanks Paul
wilky Posted January 8, 2008 Posted January 8, 2008 PaulC555 said: thanks Peter....anyone else care to comment before I ring him.. thanks Paul Dont think its 3 bar unless your mapped for it, Im sure its abit lower on standard fuelling. wheres the Squiggle when you need him?
nanaki Posted January 8, 2008 Posted January 8, 2008 im sure he'll top by at some point and comment in the way that only he can.
wilky Posted January 8, 2008 Posted January 8, 2008 Wilky said: Dont think its 3 bar unless your mapped for it, Im sure its abit lower on standard fuelling. wheres the Squiggle when you need him? 2.7 bar static.
the squiggle Posted January 8, 2008 Posted January 8, 2008 Sorry never noticed this Been joining every Subaru forum in the land for the last 7hrs Hope yer sorted now
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