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Ford 4.0 V-6 injector O-rings

905 views 3 replies 3 participants last post by  cozwurth 
#1 ·
Is there a trick to installing the injectors on this 4.0 V-6? My friend is replacing the engine in his '02(?) Ranger with the OHC 4.0 V-6. Broke a valve spring and swallowed a valve, lots of carnage. Anyway, he is having trouble getting the injectors installed with the new O-rings. He's tried several different lubricants, but has still torn several. Any tricks to these things?

Dave
 
#3 ·
On the 2.9 (similar to 4.0) I seat all injectors in the manifold. I use a bit of silicone grease on the upper O rings, then I place the fuel rail on top of the Injectors and gently add even pressure on either end to the fuel rail and rock the rail just a tiny bit. They should slip right in but remember to press evenly across the fuel rail.
 
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