Escort L4-116 19L VIN 9 TBI (1987) - Intake Manifold Cleaning Before Installation
Intake Manifold: Technical Service Bulletins
Intake Manifold - Installation Damage Prevention
Article No. 86-24-14
INTAKE MANIFOLD - 1.9L - CRACKS AT MOUNTING FLANGE - REVISED INSTALLATION PROCEDURE FOR FUEL CHARGING
ASSEMBLY
FORD 1987 ESCORT, EXP
LINCOLN-MERCURY 1987 LYNX
CALIBRATION: 1.9L CFI
Intake manifold cracks at the fuel charging assembly mounting flange may be caused by overtightening of the retaining bolts at the time of installation.
To prevent cracking of the mounting flange, use the following revised service procedure:
1.
Clean the mounting surface and position a new gasket on the intake manifold.
2.
Apply two drops of Loctite Threadlocker 242 Liquid on the long threaded end of bolts; approximately the last 6 to 8 threads.
Figure 11
3.
Snug bolts #1, #2, and #3 by hand while centering the CFI throttle body on the spacer, Figure 11.
4.
First, tighten bolt #1, then #2, then #3 to 8 +/- 2 ft.lbs. (11 +/- 4 N-m).
5.
Then tighten bolt #1, then #2, then #3 to 16 +/- 2 ft.lbs. (22 +/- 4 N-m).
6.
Reconnect the electrical connectors to ISC, throttle position sensor, and fuel injector.
7.
Reconnect the fuel inlet and outlet connections, and connect the PCV vacuum line at fuel charging assembly.
