benthng Posted September 16, 2013 Share Posted September 16, 2013 Hi all Need help again, non edc auto disco normally spools up to 14 psi quickly but this morning struggled to reach 6psi even at 2000 rpm uphill. Air hoses checked ok, fuel pump aneroid diaphragm and intercooler not leaking, intake turbine spins with no free play, waste gate rod moves with spring tension. I am stumped and would greatly appreciate any ideas. Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted September 16, 2013 Share Posted September 16, 2013 Sounds like a fuel problem to me. Check fuel filters, lift pump etc etc. Quote Link to comment Share on other sites More sharing options...
PaulN Posted September 16, 2013 Share Posted September 16, 2013 Sounds like the mechanicals check out so if she ticks over forever ok - check water in sedimenter, fuel filter or lines? Clogged air filter? Quote Link to comment Share on other sites More sharing options...
Boydie Posted September 17, 2013 Share Posted September 17, 2013 Have you checked the waste gate that its not sticking ? Quote Link to comment Share on other sites More sharing options...
benthng Posted September 17, 2013 Author Share Posted September 17, 2013 Waste gate rod can move forward and retract under very from spring tension, did not remove circlip though was afraid cant get it back on with the very narrow space. What are the chances of a chunk of carbon holding the gate open? Will clean sendimenter and change filter for now hoping its not a faulty lift pump and not stuck waste gate. Thanks guys. Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted September 17, 2013 Share Posted September 17, 2013 I think the turbo is a red herring here. It's only because you mentioned it (and have a boost gauge I'd guess) that it is suspect. If you just said down on power then all responses would be to look for fuel system problems. Quote Link to comment Share on other sites More sharing options...
benthng Posted September 17, 2013 Author Share Posted September 17, 2013 Found the problem, a blanking plug came off a 1/4" bsp hole that I tapped off the end of the intake manifold. It was one of those clever things that was done last year. Saw it when I shone a torch thru the intake hose end after a head scratching moment... As cleanng the sedimenter filter lift pump etc didn't work. Again thanks for all the advice. Puzzling how the plug came off though. Quote Link to comment Share on other sites More sharing options...
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