E 350 V10-6.8L VIN S (2006)
15. Remove and discard the O-ring seals from each fuel injector.
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Lubricate the new fuel injector O-ring seals with clean motor oil.
16. CAUTION: Check for fuel leakage after installation is complete.
NOTE: Be sure the fuel injectors and the fuel rail are fully seated.
To install, reverse the removal procedure.