Question about 1990 Ford F350

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Plastic piece...what is it?

There's a plastic piece between my fuel injector and my fuel line, and it may possibly be some kind of sleeve, or a primer line for the fuel system? It's broken, and I can't figure out what it's called so that I can replace it. Thanks in advance.

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Go to a ford dealer parts dept and show them the piece and where it goes, thy will be able to ID it from the parts illustration books easily.

Posted on Nov 12, 2008


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Posted on Jan 02, 2017


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WARNING Fuel injection systems are under pressure and can cause injury! DO NOT attempt any fuel system repairs unless you have experience with these systems. If you are confident in your ability to work on the system check for fuel getting to cylinders first. If the plastic piece is a snap in style connector, a piece of it may be in the fuel line blocking it. If the vehicle has Throttle Body Injection you can look inside the throttle body to see if it is getting fuel. Tuned Port Injection you would have to pull the fuel rail to check at the injectors.

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Daihatsu Rocky will not start. It is not getting fuel. I do not hear the fuel pump running

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Facing front of 7.3 diesel, fuel is leaking at right front fuel injector,,,looks like the banjo fitting,,,what seals this fitting as it can be twisted by hand??

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The Vortec engines were notorious for those kind of problems. The problem will be under the upper-intake manifold, and the fuel injector assembly will either have a cracked plastic fuel line running out to one or more of the fuel injectors, or the fuel pressure regulator that is located on the end of the fuel injector assembly is faulty or it has detached from the fuel injector assembly. Either way the lower intake manifold will be flooded with fuel anytime that the fuel pump runs.

There were two types made, the first type had fuel lines that connected to the lower intake manifold, and then from the metal fittings the fuel line turns into plastic and runs inside the lower intake manifold and under the upper-intake manifold where it runs over to the fuel injector assembly, and this type can really flood out an engine when it becomes faulty.

The second type had metal fuel lines running over the upper intake manifold and they connected to the top of the fuel injector assembly, however, under the upper-intake manifold there are still plastic lines to the fuel injectors and also the fuel pressure regulator that could be faulty and cause the engine to severely flood.

The upper-intake manifold is not that difficult to remove, and after you remove the upper-intake manifold then (replace the fuel lines to the fuel injector assembly if it is the second type) turn the ignition to the "Run" position and when the fuel pump runs you should see where the fuel is leaking/spraying from, and it will most likely be a large high pressure leak from a ruptured plastic fuel line.

Let me know if you require any further assistance.

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