Bronco L6-300 4.9L VIN Y 1-bbl (1983)
b.
Drill a 5/16" hole in the side wall of the air cleaner approximately 12" to the rear of the existing crankcase closure hole for 5.0L and 5.8L and
approximately 6" to the rear on 7.5L. (The 4.9L does not need a new hole).
c.
Install a 1/2" hose (E2AZ-6853-A) to the existing adaptor in the valve cover oil fill cap (2 pcs. 2-5/8" long for 4.9L, 18" long for 5.0L/5.8L,
12" long for 7.5L).
d.
At a convenient location, cut the hose and install an in-line filter E2AZ-6A768-A for 5.0L, 5.8L and 7.5L. On the 4.9L, install the filter
between the 2-5/8" long pieces installed in (c.).
NOTE:
Install the filter with the wire mesh toward the oil fill cap. The mesh can be seen by looking into the end of the filter assembly.
e.
Install an adapter E43Z-9E606-A in the air cleaner and attach using a retaining clip 383741-S. Center the adapter elbow in the new hole for
5.0L, 5.8L and 7.5L. Use the existing PCV filter (closure) pack hole for 4.9L.
f.
Cut the PCV filter (closure) hose to proper length and attach to the adapter.
g.
Plug the old hole in the tray with plug 377678-S for 5.0L, 5.8L and 7.5L only.
FIGURE 25
6.
For 5.0L and 5.8L engines with a 7200 VV carburetor, clean and seal the carburetor to prevent dirt migration through the choke rod and
accelerator pump rod holes (Refer to Figure 25).
a.
Remove the carburetor from the vehicle.
b.
Without disassembling the carburetor, thoroughly clean with Ford Automatic Choke Cleaner or equivalent, all of the choke linkage and
accelerator pump linkage on the top and sides of the carburetor. Pay particular attention to the top and bottom of the upper body casting
around the choke and accelerator pump rods. Allow cleaner to evaporate or blow dry with shop air.
c.
Remove stepper motor, gasket, pintle and spring. Clean pintle and pintle cavity in main body casting thoroughly with Ford Automatic Choke
Cleaner or equivalent. Do not re-install stepper motor at this time.
