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I don't know if this will help but have a good quality socket when doing this sort of thing. Some people buy cheap sockets and they will not fit right or they strip very easily.
Some spark plugs are hard to get out and does take a lot of work to get them loose. Make sure you are turning them to the left which is out as well If you turn to the right you will tighten them up.
Hey Don,is your spark plug cross threaded?If so put oil on plug to get on threads,it's possible that you can break area around plug,be super careful.If you get it out and the threads are stripped,go to Autozone and tell them that your stripped out a spark plug hole and you need a insert Get a breaker bar if hard to turn or a long extension..
The pipe that you referred to is the exhaust crossover pipe. Below I've included removal and installation instructions.
Also, the procedure for bleeding the coolant system is critical; if you need those instructions please post the question.
REMOVAL PROCEDURE 1. Disconnect the battery ground (negative) cable. 2. Remove the throttle body air inlet duct. 3. Drain the coolant from the cooling system. 4. Remove the inlet radiator hose from the engine. 5. Remove the thermostat bypass pipe. 6. Remove the exhaust crossover heat shield bolts. 7. Remove the exhaust crossover heat shield. 8. Remove the exhaust crossover pipe studs/nuts. 9. Remove the exhaust crossover pipe. INSTALLATION PROCEDURE 1. Install the exhaust crossover pipe. 2. Install the exhaust crossover pipe studs/nuts. 3. Tighten the exhaust crossover pipe studs/nuts to 18 lb ft. 4. Install the exhaust crossover heat shield. 5. Install the exhaust crossover heat shield bolts. 6. Tighten the exhaust crossover heat shield bolts to 89 lb in. 7. Install the thermostat bypass pipe. 8. Install the inlet radiator hose to the engine. 9. Fill the cooling system with engine coolant. 10. Install the throttle body air inlet duct. 11. Connect the battery ground (negative) cable.
Remove the fuel rail from the vehicle, as outlined earlier in this section.
Remove the front crossover tube retaining attaching screw and crossover tube retainer from the right hand rail side.
Unfasten the retainer-to-base screw assembly and rear crossover tube retaining from the pressure regulator and base assembly.
Separate the left hand fuel rail and plug assembly from the right hand fuel rail and plug assembly.
Remove the bracket-to-rail attaching screw, 2 bracket-to-base screws and the regulator and base bracket.
Unfasten the screw that attaches the fuel outlet tube to the right hand rail.
Remove the base-to-right hand rail assembly.
Fig. 1: Typical fuel pressure regulator assembly - 5.7L (VIN 8) engine
Twist the regulator and base assembly to the remove it from the fuel outlet tube.
Unplug the base-to-rail connector.
Remove and discard the O-ring seals from the following components, noting the location and sizes of the O-rings to ensure proper placement during installation:
Connector
Fuel outlet tube
Rear crossover tube
Front crossover tube
Check the O-rings and sealing surfaces for damage that may prevent proper sealing.
Installation is the reverse of the removal procedure. Tighten the retaining screws to 44 inch lbs. (5 Nm).
Connect the negative battery cable, then turn the ignition to the ON position and check for fuel leaks.
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