1987 Ford Bronco Fuel Injector

Is it bronco or bronco II
what is the engine size
do you have a fuel pressure gauge
if so check fuel pressure and check if pressure hold after key off
if not then its most likely fuel pressure regulator or fuel injector

Removal & Installation (2.9L Engine)
Open hood and install protective covers.
Disconnect negative battery cable.
Remove air inlet tube from air cleaner to throttle body. Remove fuel cap to relieve tank pressure.
Disconnect vacuum hose from fuel pressure regulator. Using a hand vacuum pump, apply about 25 in. Hg pressure to pressure regulator. Fuel system pressure will be released through fuel return hose.
Remove upper intake manifold and throttle body assembly.
((((Disconnect electrical connectors at air by-pass valve, throttle position sensor, EGR sensor and Air Charge Temperature (ACT) sensor. Remove air inlet tube from air cleaner to throttle body.
Remove snow/ice shield to expose throttle linkage. Disconnect throttle cable from ball stud. Disconnect upper intake manifold vacuum connectors, both front and rear fittings including EGR valve, and vacuum line to fuel pressure regulator.
Disconnect PCV closure tube from under throttle body and disconnect PCV vacuum tube from under manifold. Remove canister purge line from fitting near power steering pump. Disconnect EGR tube from EGR valve by removing flange nut.
Loosen bolt retaining A/C line at upper rear of upper manifold and disengage retainer. Remove 6 upper intake manifold retaining bolts. Remove upper intake manifold and throttle body as an assembly.))))

Disconnect crossover fuel hose, fuel supply, and fuel return line from fuel supply manifold.
Remove fuel supply manifold retaining bolts. Carefully remove fuel supply manifold from lower intake manifold. The fuel injectors are retained in fuel supply manifold with clips.
Remove retainer clips and inspect for corrosion and damage. Remove injector(s) from fuel supply manifold and wipe cup with clean dry cloth.
To install, ensure injector caps and injector recesses are clean and free of contamination. Lightly grease recesses. Install 3 injectors on right side recess of intake manifold, and then 3 on left.
Position and press down firmly until attachment holes line up and install fasteners. To complete installation, reverse removal procedure

FordBronco Posted
I need to get to the heating core to exchange it as well, so I need to know how to get to it.

HEATER CORE
NOTE:These procedures are for vehicles with air conditioning systems only.

Drain coolant from radiator.
Disconnect heater hoses from heater core tubes.
Cap hoses. In passenger compartment, remove 5 screws attaching heater core access cover to plenum assembly.
Pull heater core rearward and down, removing it fromplenum assembly. To install, reverse procedure.

Sorry I don't have any access to DVD to share
and as far as the heater core I look up all Manuel available not much luck too this is as close as I can come with not the same but close to what you have
all info at the dealer computer dated back to 1992 and none before