timbeauuk Posted January 4, 2011 Share Posted January 4, 2011 What is the valve on the underside of the exhaust side of my 300tdi turbo? It looks as if it might be a butterfly valve. Looking at equivalent units on 'google images', it is operated by an adjustable metal linkage that comes from a valve (Diaphram??) that has a rubber pipe from the inlet side of the turbo. Mine is siezed but the engine still seems to work perfectly well. Any help gratefully received. Quote Link to comment Share on other sites More sharing options...
tim_roberts Posted January 4, 2011 Share Posted January 4, 2011 Are you talking of the turbo wastegate valve? The push rod is normally extremely stiff to move by hand (you will need a pair of pliers) but it should be possible and a bit of oil or grease on the linkages is a good idea. Quote Link to comment Share on other sites More sharing options...
western Posted January 4, 2011 Share Posted January 4, 2011 it's the wastegate actuator, all diesel turbocharged engines have them Quote Link to comment Share on other sites More sharing options...
timbeauuk Posted January 4, 2011 Author Share Posted January 4, 2011 What does it do? I have WD40'd it and will get pliers to some time but is it important? Quote Link to comment Share on other sites More sharing options...
western Posted January 5, 2011 Share Posted January 5, 2011 What does it do? I have WD40'd it and will get pliers to some time but is it important? Yes, it is important for your turbo, the reason why it's fitted ------------ A wastegate is a valve that diverts exhaust gases away from the turbine wheel in a turbocharged engine system. Diversion of exhaust gases regulates the turbine speed, which in turn regulates the rotating speed of the compressor. The primary function of the wastegate is to regulate the maximum boost pressure in turbocharger systems, to protect the engine and the turbocharger. One advantage of installing a remote mount wastegate to a free-float (or non-WG) turbo includes allowance for a smaller A/R turbine housing, resulting in less lag time before the turbo begins to spool and create boost.[1] borrowed from ---- http://en.wikipedia.org/wiki/Wastegate Quote Link to comment Share on other sites More sharing options...
TS888 Posted January 6, 2011 Share Posted January 6, 2011 Is there a reason you think it isn't working? It's VERY difficult to move by hand. Quote Link to comment Share on other sites More sharing options...
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