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Hi all, I've recently replaced the injector wiring harness and since having the car back it's got no power as if the turbo isn't boosting and the brake pedal goes hard! Is it a case of a vacuum hose hasn't been re-connected properly or a split in a vacuum pipe?
It does sound like a vac line issue for sure - did a garage do the work? Maybe they've knocked a vac line near the vacuum/tandem pump as the injector harness is in that area. The vac system from that pump also provides the vacuum to the brake booster/servo so no vacuum = no assisted braking effort = hard brake pedal. Have a look around the back of the engine on the drivers side of the engine bay and you'll see a vac line coming from the tandem pump on the rear of the engine that splits and goes to the vac system and the brake servo. Give it a check and see if anything has popped off or been snapped.
Thanks all sorted now. You were correct a vacuum pipe had been knocked of/not put back on