Turbocharger - Toyota Supra 1990 Manual

TURBOCHARGER SYSTEM - Turbocharger
TC-7
EM6251
EM6252
TURBOCHARGER
ON-VEHICLE INSPECTION OF TURBOCHARGER
1. INSPECT INTAKE AIR SYSTEM
Check for leakage or clogging between the air cleaner and
turbocharger inlet and between the turbocharger outlet and
cylinder head.
• Clogged air cleaner ..... Clean or replace the element
• Hoses collapsed or deformed ..... Repair or replace
• Leakage from connections ..... Check each connection
and repair as necessary
• Cracks in components ..... Check and replace as
necessary
2. INSPECT EXHAUST SYSTEM
Check for leakage or clogging between the cylinder head
and turbocharger inlet and between the turbocharger out-
let and exhaust pipe.
• Deformed components ..... Repair or replace
• Foreign material in passages ..... Remove
• Leakage from components ..... Repair or replace
• Cracks in components ..... Check and replace
3. INSPECT OPERATION OF ACTUATOR AND WASTE GATE
VALVE
(a) Remove the No.4 air cleaner pipe with No.1 and No.2
air cleaner hoses.
(b) Disconnect the air hoses.
(c) Disconnect the air flow meter connector.
(d) Loosen the clamps and remove the bolt.
(e) Remove the No.7 air cleaner hose with air flow meter
and air cleaner cap.
(f) Disconnect the PS idle up air hose.