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Turbo Or Not Turbo? That Is The Question!
Vauxhall Vectra 1.9 CDTi 2007 150 BHP
The above car came in recently making a whistling noise on acceleration, several other garages and a local turbo repairer had all diagnosed the fault as the turbo with prices averaging around the £1000 mark supplied and fitted. At first we thought it was the boost valve solenoid after blocking one of the pipes from the solenoid the noise went away but the car had reduced power. Finally thinking it was the turbo too, we set about removing it to check for play in the vane spindle bearings. The turbo unit is part of the exhaust manifold on these models, so the exhaust downpipe and heat shields were removed to try to gain access to it. Finally after removing the ancillaries, the oil feed pipe, the oil drain pipe and supporting bracket, the manifold was ready to be removed. It was then that we noticed some black soot around number four exhaust port and when we put the socket on to undo this nut it sheared off with little or no effort. Once the turbo was removed, placed on the bench and checked, it was found to be okay. We removed the broken stud cleaned up both surfaces, replaced the stud along with a new manifold gasket and built up the rest of the components, crossed our fingers and started the car. The noise was gone, so it was all down to exhaust gases escaping from around this broken stud. The customer was over the moon because it had cost a fraction of what he had expected.
Posted on Monday 11th of November 2013Don't understand this? Ask a question