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A direct fuel injection fuel system includes a fuel rail cap and a fuel injector received within the fuel rail cap. A clip extends through slots in the fuel rail cap and engages the fuel rail to support the fuel rail within the fuel rail cap. The fuel rail cap includes a groove adjoining the slots t

A direct fuel injection fuel system includes a fuel rail cap and a fuel injector received within the fuel rail cap. A clip extends through slots in the fuel rail cap and engages the fuel rail to support the fuel rail within the fuel rail cap. The fuel rail cap includes a groove adjoining the slots to accept a portion of the clip. The clip engages a shoulder on the fuel injector assembly. The shoulder may be on the injector body or on an adapter secured to the injector body.

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1. A fuel injector assembly comprising: a fuel injector cap having a wall with an outer surface and an inner surface, the inner wall surface defining an axially extending internal cavity, the outer surface having a transversely extending groove extending partially through the wall, a transversely ex

1. A fuel injector assembly comprising: a fuel injector cap having a wall with an outer surface and an inner surface, the inner wall surface defining an axially extending internal cavity, the outer surface having a transversely extending groove extending partially through the wall, a transversely extending first slot extending from the outer surface to the internal cavity, and a transversely extending second slot extending from the outer surface to the internal cavity, the second slot circumferentially spaced from the first slot, wherein the fuel injector cap groove extends between and adjoins the first and second slots,a fuel injector received within the internal cavity of the fuel injector cap, anda clip having a transversely extending section extending into the fuel injector cap groove, a first leg extending through the fuel injector cap first slot, a second leg extending through the fuel injector cap second slot, the first and second clip legs supporting the fuel injector on the fuel injector cap. 2. The fuel injector assembly of claim 1 wherein the fuel injector includes a flange, wherein the first clip leg engages the flange. 3. The fuel injector assembly of claim 2 wherein the fuel injector cap includes an internal shoulder, and wherein the first clip leg engages the internal shoulder. 4. The fuel injector assembly of claim 1 wherein the fuel injector includes a fuel injector body having a groove, and an adapter having a radially inwardly extending flange extending into the fuel injector body groove, wherein the first clip leg engages the adapter to support the fuel injector. 5. The fuel injector assembly of claim 4 wherein the adapter includes a radially outwardly extending flange engaging the first clip leg. 6. The fuel injector assembly of claim 5 wherein the adapter includes a groove, and wherein the first clip leg extends into the adapter groove. 7. The fuel injector assembly of claim 1 wherein the fuel injector cap wall comprises a generally cylindrical outer surface, and wherein the first and second slots and the cap groove are in the generally cylindrical surface, and wherein the first and second slots and the cap groove extend around the generally cylindrical injector cap surface less than 360 degrees. 8. The fuel injector assembly of claim 7 wherein each of the first and second clip legs has an arcuate radially internal surface, and wherein the clip has an internal notch between the arcuate surfaces. 9. A fuel injector assembly comprising: a fuel injector cap having a wall with an outer surface and an inner surface, the inner wall surface defining an axially extending internal cavity, the wall having a transversely extending slot extending from the outer surface to the internal cavity, the internal cavity having first and second adjacent and coaxial cylindrical portions, the diameter of the first cylindrical portion being different from the diameter of the second cylindrical portion to provide an internal shoulder,a fuel injector having a cylindrical body and a radially outwardly extending flange having first and second axially spaced surfaces, the first flange surface engaging the internal shoulder, anda clip having a leg extending through the fuel injector cap and engaging the second fuel injector flange surface to clamp the injector flange between the shoulder and the clip to support the fuel injector and restrain axial movement of the fuel injector. 10. A fuel injector assembly comprising: a fuel injector cap,a fuel injector including a fuel injector body having an external surface, the external surface defining a groove, and an adapter having a flange extending radially inwardly into the fuel injector body groove, the adapter secured to the fuel injector body, the adapter including an external groove, anda clip engaging the adapter groove and the fuel injector cap to support the fuel injector. 11. The fuel injector assembly of claim 10 wherein the fuel adapter extends circumferentially around the fuel injector less than 360 degrees. 12. The fuel injector assembly of claim 1 further comprising: a fuel rail,a bracket attached to the fuel rail,a fastener attaching the bracket to an engine, anda shock absorber positioned between the bracket and the fastener.