Troubleshooting

How to hold the turbo boost pressure? For example, if yours is 1.2bar it will be initially pushed (start open) at 0.64bar and fully open at 1.2bar.If your demand is initial open is 1.2bar you should choose 2.0bar spring default setup. Now you could adjust it more tightly with preload the rod end as following steps.

Possible Cause     Possible Remedy Fuel injection pump or fuel injectors incorrectly set     Refer to engine manufacturer's manual and replace or adjust faulty components Wastegate mechanism set incorrectly   Contact United Fuel Injection for correct setting details Dirty air cleaner   Clean or replace element according to manufacturer's recommendations Restricted compressor intake duct   Remove restriction or replace damaged parts as required Air leak in feed from compressor to intake manifold   Replace seals, gaskets or tighten fastners as required Air leak beween intake manifold and engine   Refer to engine manufacturer's manual and replace gaskets or...

Possible Cause     Possible Remedy Excessive dirt build up on compressor wheel and/or diffuser vanes   Clean in accordance with details/instructions from Steve Boyle at UFI Turbocharger damaged   Find and correct cause of failure, repair or replace turbocharger as necessary Failed diaphragm   Replace using correct actuator service kit Leaking hose   Replace hose and clips Wastegate mechanism set incorrectly   Contact United Fuel Injection for correct setting details Restricted compressor intake duct   Remove restriction or replace damaged parts as required Restricted air duct from compressor to intake manifold   Remove restriction or replace damaged parts as...

Possible Cause     Possible Remedy Fuel injection pump or fuel injectors incorrectly set     Refer to engine manufacturer's manual and replace or adjust faulty components Seized valve   Free valve/replace complete turbine housing sub-assembly Wastegate mechanism set incorrectly   Contact United Fuel Injection for correct setting details Dirty air cleaner   Clean or replace element according to manufacturer's recommendations Restricted compressor intake duct   Remove restriction or replace damaged parts as required Restricted air duct from compressor to intake manifold   Remove restriction or replace damaged parts as required Restricted intake manifold   Refer to engine manufacturer's manual...

Possible Cause     Possible Remedy Restricted engine crankcase breather     Refer to engine manufacturer's manual, clear restriction Turbocharger bearing housing sludged or coked     Change engine oil and oil filter, overhaul or replace turbocharger as required Worn engine piston rings or liners   Refer to engine manufacturer's manual and repair as required Burnt valves and/or pistons   Refer to engine manufacturer's manual and repair as required Excessive dirt build up on compressor wheel and/or diffuser vanes   Clean in accordance with details/instructions from Steve Boyle at UFI Turbocharger damaged   Find and correct cause of failure, repair...