Goober Posted January 16, 2009 Share Posted January 16, 2009 Hi I have recently put a 300tdi engine in a defender. I drove it home and noticed a lack of power, and when I put my foot down there was no kick when the turbo usually kicks in. And instead of power there is a large squal noise. I think this mayb be a prob with the turbo but not sure. Anybody have any ideas? I do have a spare turbo from a previous engine, but not sure how easy it is to change. Thanks Quote Link to comment Share on other sites More sharing options...
LittleBlue88 Posted January 16, 2009 Share Posted January 16, 2009 Was the power drop-off sudden or gradual? Quote Link to comment Share on other sites More sharing options...
flatback90 Posted January 16, 2009 Share Posted January 16, 2009 if its more of a whistle than a squeel then its gonna be a turbo hose seeing as you're only after fitting it........ Quote Link to comment Share on other sites More sharing options...
Goober Posted January 16, 2009 Author Share Posted January 16, 2009 its not a sudden loss. the boost isnt there from when the turbo usualy kicks in. Well its more like a screach noise maybe. May a hose be loose ? Quote Link to comment Share on other sites More sharing options...
jcwcooper Posted January 16, 2009 Share Posted January 16, 2009 or a blow in the exhaust/manifold Dave. Quote Link to comment Share on other sites More sharing options...
Goober Posted January 16, 2009 Author Share Posted January 16, 2009 its not the exhaust because i put a new one on, and i dont think it is the manifold either Quote Link to comment Share on other sites More sharing options...
jcwcooper Posted January 16, 2009 Share Posted January 16, 2009 manifold gasket to the engine can make that noise, Ive had it before......worth checking. Dave. Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted January 16, 2009 Share Posted January 16, 2009 Pull the intake hose off and wobble the turbo shaft - should be a little side to side and none axially. If loads then the turbo is buggered....although that doesn't mean that is the source of the noise Quote Link to comment Share on other sites More sharing options...
Goober Posted January 16, 2009 Author Share Posted January 16, 2009 oh ok il hav a check. but would that also give it a loss of power? in responce to the manifold thanks Quote Link to comment Share on other sites More sharing options...
Goober Posted January 16, 2009 Author Share Posted January 16, 2009 Pull the intake hose off and wobble the turbo shaft - should be a little side to side and none axially. If loads then the turbo is buggered....although that doesn't mean that is the source of the noise Ok il pull the intake hose off and give turbo a wobble. what else did u say, should it move side to side? and how do u no if its buggered? thanks Quote Link to comment Share on other sites More sharing options...
white90 Posted January 16, 2009 Share Posted January 16, 2009 Under load squealing is the boosted air escaping check all connections/pipework from turbo/intercooler and Plenum chamber. Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted January 16, 2009 Share Posted January 16, 2009 I agree with white90 - far more likely to be a loose connection/damaged pipe/holed intercooler than a buggered turbo - they don't often go wrong...only 1 moving part! Get the engine warm and get someone to put foot to floor for a few seconds while stationary - the turbo should spool up which should make any holes easy to find if you have your head in the engine bay. It is ok to take it to the limiter, but just don't hold it there! In response to which way you should wiggle the shaft though - side to side should be some play, in/out should be none. TBH though, even if there is a little in/out it doesn't mean it's broken - you will be able to tell if it is so serious it is making a squealing noise. The bearings will feel rough with large amounts of play, and you will probably see contact marks between compressor and housing. Turbos are easy(ish) to change BTW - pipework off, inlet manifold off, downpipe off, exhaust manifold and turbo off, then refit. If everything undoes easily, should only take an hour or so. Quote Link to comment Share on other sites More sharing options...
Goober Posted January 21, 2009 Author Share Posted January 21, 2009 Hi just want to say a big thanks to everyone who helped me out. i found a cracked pipe from the turbo. so a £6 from rcv will sort that out. Cheers Quote Link to comment Share on other sites More sharing options...
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