F 250 2WD Pickup V8-351 5.8L VIN H 4-bbl HP (1985)
10 through 13 until measured speed rise meets reset RPM specification. After final adjustment, proceed to step 20.
18.
If measured speed gain is lower than speed gain specifications, turn idle mixture screw(s) clockwise in equal amounts while simultaneously
repeating steps 10 through 13 until measured speed rise meets reset RPM specifications. After final adjustment, proceed to step 20.
19.
If there is no RPM rise and the minimum speed gain specification is zero RPM, perform speed drop test as follows. Speed drop test information
is specified with the artificial enrichment requirements whenever minimum speed gain specification is zero RPM.
a. While observing tachometer, adjust mixture screw(s) clockwise by number of turns specified for speed drop test, noting drop in engine speed.
b. If measured speed drop is equal to or drops off by more than the speed drop specification, return mixture screw(s) to position before
adjustment and proceed to step 20.
c. If measured speed drop is less than specified minimum speed drop specification, leave mixture screw(s) in adjusted position and repeat steps
10 through 19.
20.
Install tamper resistant feature for carburetor idle fuel air adjustment.
21.
Install PCV valve in grommet.
22.
On vehicles equipped with feedback carburetor, proceed as follows:
a. Connect electrical connector to engine coolant temperature sensor.
b. Connect hose to MAP sensor.
c. Connect hose to VOTM.
d. Check curb idle speed and adjust to specification.
23.
Remove all test equipment, reconnect all system components and install air cleaner.
