Jetta L4-1.9L DSL Turbo (AAZ) (1997)
Crankshaft: Customer Interest
Engine - Poor Performance, Exhaust Smoke Visible
Group: 13
Number: 97-07
Date: Nov. 12, 1997
Subject:
Poor Performance, Exhaust Smoke Visible
Model(s):
Golf, Jetta with (engine Code AAZ)
1993-->1997
Passat with (engine code AAZ)
1993 & 1995
Supersedes T.B. Group 13 Number 97-02 dated Jan. 28, 1997
Condition
Poor performance, visible smoke from exhaust system.
May be caused by the crankshaft sprocket bolt (M14 x 1.5 x 47) loosening.
Production
Crankshaft sprocket bolt tensile strength increased to 12.9.
Service
If this condition exists:
-
Check injection pump timing.
If timing is incorrect:
-
Turn crankshaft to TDC for No. 1 cyl.
-
Remove crankshaft sprocket, see applicable
Repair Manual for Models listed above.
-
Check Crankshaft and sprocket for wear. If crankshaft or crankshaft sprocket show signs of wear:
-
Replace crankshaft, crankshaft sprocket and bolt. --> applicable Repair Manual for Models listed.