F 150 4WD Pickup V8-302 5.0L (1986)
^
Graphs without spikes (Figure 3) indicate that the distributor is NOT to be replaced.
8.
If spiking is found, replace the distributor with the appropriate 12127 assembly. Refer to the Dealer Master Parts Catalog for correct parts usage.
a.
Reuse the TFI module, cap and rotor.
b.
Rerun the procedure and PRINT THE NEW GRAPH to verify that the new distributor corrected the spark knock condition.
c.
Do not disassemble or rebuild the old distributor.
d.
Return the distributor with the "before and after" graphs to the Warranty Parts Return Center.
OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS:
Eligible Under Bumper To Bumper Warranty Coverage For 1992/93 Models, Basic Warranty For All Other Model Years And Emission Warranty
Coverage
OPERATION DESCRIPTION
TIME
931310A
1985-93 5.0L (EFI/TFI)
1.5 Hrs.
1988-93 5.8L (EFI/TFI) Bronco
and F-Series
931310B
1985-93 5.0L (EFI/TFI)
1.6 Hrs.
1988-93 5.8L (EFI/TFI) Econoline
DEALER CODING
BASIC PART NO.
CONDITION CODE
12127
08
OASIS CODES: 615000, 615500, 615600
