Turbocharger Trouble Shooting

CONDITION	POSSIBLE CAUSE	CORRECTION
Engine Detonation	Malfunction in spark advance or retard system	Check distributor and ignition, see ELECTRICAL
	EGR system defect	Check EGR system
	Carburetor/throttle body or turbocharger air inlet restrictions	Remove restrictions
	Actuator allows too much boost	Check boost pressure and adjust
	Defect in carburetor/throttle body power system	Inspect and repair carburetor/throttle body, see FUEL
	Internal turbocharger defect	Replace turbocharger, see FUEL
Low Engine Power	Air inlet restriction	Remove restriction in inlet
	Exhaust system restriction	Remove restriction
	Malfunction in spark advance or retard system	Check distributor and ignition, see ELECTRICAL
	EFE system defect	Check EFE system operation
	EGR system defect	Check EGR system
Engine Noise	EFE system defect	Check EFE system
	Loose exhaust system or leak	Check exhaust mounting and connections
	AIR system defect	Check AIR system
	Restricted turbocharger oil supply	Check oil delivery system
Engine Surges	ESC malfunction	Check ESC system
	Defective vacuum switch	Replace defective switch
	EGR system defect	Check EGR system
	Loose turbocharger bolts on compressor side	Check mounting bolts and tighten
Excessive Oil Consumption (Blue Exhaust Smoke)	Leak at turbocharger oil inlet	Check fittings and repair
	Turbocharger oil drain hose leaks or stopped up	Check drain hose for restrictions or loose fittings
	Turbocharger seals leaking	Replace seals, see FUEL