When Diesel Turbos fail, symptoms - Volvo V40 1.9 TDi
Discussion
I know all the symptoms on petrol cars but not familiar with Diesels, infact never even looked at a TD engine before - was a suprise to see the inlet manifold and exhaust manifold on the same , but anyway..
Just been round to a friends to examine his car as it has lost power significantly and he said driving it its as if the turbos stopped doing anything. My first thought was a blown off intercooler pipe.
It starts and runs fine and absolutely no smoke out the rear, but it appears to have been leaking oil from where the intercooler pipe to manifold meets, as all the back of the engine is oily where it looks to have been dripping/ seeping for months. All pipes appear to be connected up fine and reving the engine you can hear the turbo spin up but it does very quickly decelerate. Whipped the turbo inlet pipe off and it wasn't significantly oily, no more than expected from the crank breather, the compressor wheel spins freely and doesn't have any play in any direction and no obvious damage.
So the turbo appears knackered whatever with the sudden deceleration and it did need quite a stamp on the throttle to get it spinning, damaged exhaust turbine? But that doesn't explain the oily intercooler pipes if the oil seals had gone and bearings damaged how come no play and no smoke out the exhaust? Do the Diesel filter things work well enough so clean the exhaust fumes up to completely smokeless?
Could the exhaust turbine suddenly have fallen apart and the weeping bearing are unrelated to its sudden demise?
Just been round to a friends to examine his car as it has lost power significantly and he said driving it its as if the turbos stopped doing anything. My first thought was a blown off intercooler pipe.
It starts and runs fine and absolutely no smoke out the rear, but it appears to have been leaking oil from where the intercooler pipe to manifold meets, as all the back of the engine is oily where it looks to have been dripping/ seeping for months. All pipes appear to be connected up fine and reving the engine you can hear the turbo spin up but it does very quickly decelerate. Whipped the turbo inlet pipe off and it wasn't significantly oily, no more than expected from the crank breather, the compressor wheel spins freely and doesn't have any play in any direction and no obvious damage.
So the turbo appears knackered whatever with the sudden deceleration and it did need quite a stamp on the throttle to get it spinning, damaged exhaust turbine? But that doesn't explain the oily intercooler pipes if the oil seals had gone and bearings damaged how come no play and no smoke out the exhaust? Do the Diesel filter things work well enough so clean the exhaust fumes up to completely smokeless?
Could the exhaust turbine suddenly have fallen apart and the weeping bearing are unrelated to its sudden demise?
Ah, so fully combusting the leaked oil does away with any smoke as you'd find in a petrol car, that makes sense. I guess it must have a damaged exhaust turbine and weeping but not totally shot seals, the damaged exhaust turbine causing the reluctance to spool.
I've told him to phone Owen Developments who are the Garrett main dealer and conviently local to enqire as to a replacement or refubishment and to fit it himself. Access actually looked suprisingly good, he spanners his MGB Roadster himself but has always avoided modern car maintainance out of lack of interest, sure he's perfectly capable. He phoned one local back street garage to be told, air sucking through teeth, an "absolute minimum of a grand mate" so I'm sure that price for a fix can be easily beaten.
I've told him to phone Owen Developments who are the Garrett main dealer and conviently local to enqire as to a replacement or refubishment and to fit it himself. Access actually looked suprisingly good, he spanners his MGB Roadster himself but has always avoided modern car maintainance out of lack of interest, sure he's perfectly capable. He phoned one local back street garage to be told, air sucking through teeth, an "absolute minimum of a grand mate" so I'm sure that price for a fix can be easily beaten.
Found a mobile turbo chap who will do a reconditioned turbo including fitting and year warantee for £650. Sounds a good deal and he's doing it tomorrow. For comparison volvo wanted £850+vat +fitting. A new turbo off the shelf from garrett dealer was £550+vat. Proof is in the pudding as such so will report tomorrow on the service.
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