R 10 P/U 2WD V8-454 7.4L (1987)
A.
TBI Base gasket to adapter
B.
TBI Adapter to TBI
C.
Re-torque intake manifold to 30 lbs.ft.
2.
On 1987-89 models, check base timing (Spec. 4 degrees BTDC).
View A
3.
On 1987-88 models only, relocate Map Sensor to Air Cleaner.
A.
Check Map Sensor operation using procedures on Page 3-122 and 3-123 of the 1991 Fuel and Emission Manual, replace sensor if necessary.
B.
Disconnect vacuum tube assembly and electrical connection from Map Sensor.
View B
C.
Remove Map Sensor from upper plastic bracket (See Illustration, View B). CARE MUST BE TAKEN TO AVOID BREAKING
BRACKET.
