hi every one is there any one that can resolve my problem i have a disco 300 tdi been lots of problems since i brought this pile of crap lol always one why me any way turbo went up the creek loads of smoke big time have had it re-cond only to find now all put back and its screaming at me when i accelerate some of the problems before was the waste gate i have phoned the turbo company only to be told not heard this problem before could it be something to do with the pressure valve i have done the egr valve blanked but thats been like that for a while or is it the case had my money and run thanks any info would help cheers gary

It may be as simple as a little plastic or rubber pipe has fallen off between the aluminium casting end of the turbo and the pressure capsule. This would cause (a) too high turbo pressures and (b) a Hell of a noise as the air comes blasting out at 15 to 20 psi.

Check this first.

If the noise only happens when the engine is pulling quite strongly it sounds very much like an inlet air leak somewhere, the wee pipe or the manifold gasket, or one of the turbo hose clamps between the turbo the intercooler and the manifold.

CharlesY

hi the turbo pipe is still there will be checking the manifold tomorrow but the manifold has a brand new gasket on it and all other pipes tomorrow will check back then.

everything has been torqued down to the book do you think that i should torque it down a bit more???

gary_ball said:

hi the turbo pipe is still there will be checking the manifold tomorrow but the manifold has a brand new gasket on it and all other pipes tomorrow will check back then.

Check all that carefully. If they broke the gasket it would scream like crazy. It sounds like it must be a air-leak (Please God ....) or the turbo shaft running with too much clearance and the exhaust turbine or inlet impeller hitting the casing. If it is the latter, it is almost always the compressor impeller hitting the light alloy casing, and it makes a B-A-D noise! I stil hope for an air leak.


everything has been torqued down to the book do you think that i should torque it down a bit more???

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No. Check by all means to make sure there are no loose nuts and bolts, but don't over-tighten anything. Make sure the hoses and clips are OK all the way.

CharlesY