FUEL INJECTOR AND NOZZLE REPLACEMENT (CB534C) - CONTINUED
FUEL INJECTION NOZZLE TEST - CONTINUED
If leakage occurs at the nut for the fuel supply line, make sure that the fuel supply line and the nut for the
fuel supply line are correctly aligned with the inlet connection of the fuel injector nozzle.
Loosen the nut (1) for the fuel supply line (3) at each fuel injector nozzle (2).
Listen for the low idle to decrease or become rough at each engine cylinder.
The fuel injector nozzle (2) is faulty and should be replaced when the fuel supply line (3) is loosened and the fol-
lowing events occur:
The engine rpm does not decrease.
The engine does not idle roughly.
Do not over-tighten the nut for the fuel supply line. If nut is tightened more, fuel line may become
restricted or threads of fuel injector nozzle and nut may be damaged.
Tighten each nut to 14.7 lb-ft (20 Nm).
Cap and plug all openings to prevent any
All fuel injector nozzles are replaced the
same way. One fuel injector nozzle is
Remove fuel injector (4) and washer (5).