F 150 2WD Pickup V6-4.2L VIN 2 (1997)
a.
If any of the intake valves appear to have a carbon deposit level of 7 or less (lower number rating), intake valve cleaning is required.
b.
Proceed to the IVID Cleaning Procedure. Refer to Fuel Recommendation (Figure 2) after cleaning.
4.
If no carbon deposits are seen or the deposit level is 8 or cleaner, the drive concern may be the result of low volatility fuel (Figure 2).
DVD CLEANING PROCEDURE
NOTE
BEFORE BEGINNING THE IVD CLEANING PROCEDURE, USE THE FOLLOWING CARBON BLASTER TIPS.
