The Injector Pump is the box on the driver's side of the engine with the fuel lines running to the nozzles on the head. In the rear of this box is a bolt with a 14mm lock nut and a 12 mm adjustment nut (Rack Damper Bolt). I would remove this bolt and be sure that the spring loaded pin at the end of the bolt is not sticking. The popular opinion seems to be that repalcing this bolt makes for better adjustment capabilities to the Rack.