11-03-2009, 12:44 AM
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#10 (permalink)
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Junior Member
Join Date: Sep 2009
Location: Indiana
Posts: 29
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They just create an area for the excess fuel to return back to the filter and the tank. Over time they can become brittle crack and deform, so even with new o-rings they still may not seal properly. I also changed the copper crush seals that go under the injectors. With the injectors out I cleaned em up and just checked that they were ok. Someone may want to correct me on this, but if your injectors have a lot of miles (100k+) on the you may want to replace them anyway.
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- 1971 F250 Camper Special 390, c6 auto, 4x2, 63k original miles, rebuilt engine. It's had a hard life.
- 1984 F250 6.9 IDI, 4-speed manual, 4x4. Rolled so now its a project.

- 1985 F250 351W, C6 auto, 4x4. Dads truck.
- 1988 F250 7.3 IDI, C6 auto, 4x4. Bought it with new heads and rebuilt injection pump. Since then new parts include ball joints, brakes and brake components at all wheels including parking brake cables, fuel sending unit, injector return kit, belts, starter, batteries, and alternator. Sno-way 9'1'' v blade. Ready to make some money!
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