The fuel Pump (with solenoid) gasket is leaking. I can't see an easy way of replacing this. Any ideas

Likely a vacuum leak... possible intake manifold gasket failure.

It's P0171 & P0174 not Pc 171 & Pc174 ! The engine computer has detected a lean condition ! That mean's it's not getting enough fuel or has a vacuum leak , bad O2 sensor ! fuel pump getting weak . fuel pressure regulator weak !
P0171 - System to Lean (Bank 1) The Adaptive Fuel Strategy continuously monitors fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. Refer to Section 1 , Powertrain Control Software, Fuel Trim for more information. Air Measurement System

• MAF sensor (contaminated, damaged, malfunctioning, etc.)

Fuel System

• Fuel pressure regulator (leaking, malfunctioning, etc.).
• Fuel filter plugged, dirty.
• Fuel pump (weak, check valve leaking, etc.).
• Leaking/contaminated fuel injectors.
• Low fuel pressure or running out of fuel.
• EVAP canister purge valve leaking (when canister is "clean").
• Fuel supply line restricted.
• Fuel rail pressure sensor (incorrect reading).

Air Induction System

• Air leaks after the MAF.
• Vacuum Leaks.
• PCV system (leak, valve stuck open, etc.)
• Improperly seated engine oil dipstick.

Exhaust System

• Exhaust leaks before or near the HO2Ss (exhaust manifold gasket, mating gaskets, etc.).

EGR System

• EGR valve tube/gasket leak
• EVR solenoid vacuum leak

Secondary Air Injection

• Damaged/malfunctioning secondary air injection system (mechanically stuck valve).
• P0174 - System to Lean (Bank 2) The Adaptive Fuel Strategy continuously monitors the fuel delivery hardware. The test fails when the adaptive fuel tables reach a rich calibrated limit. Refer to Section 1 , Powertrain Control Software, Fuel Trim for more information. See Possible Causes for DTC P0171. See Diagnostic Aides for DTC P0171

View Freeze Frame Data to determine operating conditions when DTC was set. Observe LONGFT1 and 2 PID(s). Refer to Section 2 , Adaptive Fuel DTCs Diagnostic Techniques for more information.

Well code 442 is a small EVAP leak and 455 is a large leak. Those codes could be a faulty gas cap or any leak in the gas tank venting system including the gasket around the fuel pump. The engine computer pressurizes the gas tank when the engine is running to check for leaks.
The starting issue could be a faulty check valve in the fuel pump allowing fuel pressure to drain back into the gas tank.

It will need to be replaced, or if it is a gasket, just replace the gasket.

You should start first fuel filter,air filter,clean throttle body,could be vacuum leak.

Have you checked the EGR valve? The P0449 EVAP code is normally or the purge solenoid on the intake. Unplug the line that feeds the EVAP system from the purge valve and connect a vacuum gage. It should flutter while it is activated. If not, that could be the culprit.

This is if you have a carbuerator:



Identification of the mechanical fuel pump inlet and outlet tubes

1. Make sure the negative battery cable is disconnected. Have a metal cup handy to collect any fuel that may spill.
   
2. Place a drain pan under the oil filter, then remove the filter with a strap wrench or equivalent.
   
3. Disconnect the fuel and vapor lines, catching fuel that spills. Dispose of any spilled fuel safely.
   
4. Plug the fuel lines to prevent leaks.
   
5. Remove the attaching bolts and remove the fuel pump.
   

The fuel pump is NOT repairable. It must be replaced as a complete unit. Always use a new gasket when installing the pump and make certain that the gasket surfaces are clean.
To install:

1. Clean the fuel pump and engine block gasket surfaces of all old gasket material or dirt.
   
2. Position a new fuel pump gasket against the engine block, then situate the pump in position over the gasket with bolt holes lined up squarely. Install the retaining bolts and tighten them to 21 ft. lbs. (28 Nm).
   
3. Connect the fuel lines to the pump (always start fuel line connections by hand-before using a wrench to tighten) and tighten the fittings to 175 inch lbs. (20 Nm).
   
4. Clean the block surface, check the gasket, then install the oil filter, tightening it by hand only. If the gasket is damaged, replace the filter. Refer to Section 1 for the proper service procedures regarding oil filters.
   
5. Start the engine and check for leaks. Check the crankcase oil level and refill as necessary.
   

CODE 174 IS BANK TWO FUEL SYSTEM LEAN.IF U HAD A FUEL PRESSURE ISSUE U WOULD HAVE A CODE 171 ALSO(BANK 1 LEAN)CK FOR A VACUUM LEAK AT THE INTAKE MANIFOLD GASKET(SPRAY CARB CLEANER WHERE MANIFOLD MEETS THE HEAD)IF THE IDLE PICKS UP THE GASKETS ARE BAD.SOMETIMES THE GASKETS GO BAD INTERNALLY.U CAN SPRAY CARB CLEANER IN TO THE OIL FILL HOLE.IF IDLE PICKS UP INTAKE GASKETS ARE BAD.GOOD LUCK

Hello;
Easy enough fix to do yourself. There are 2 bolts that hold the fuel pump onto the engine. Remove and plug the fuel lines. Remove the 2 bolts holding the pump to the engine. Remove pump and pull towards you to clear the engine and remove. Remove the fittings to replace them on new pump. Match your new pump to your old pump and make sure the fittings are in the same locale. Replace the rubber hoses. Attach the gasket to the pump with adhesive. Slide the pump into place making sure the actuator arm is under the eccentric. Replace the bolts, hook up the fuel lines, and test. Make sure you have no leaks.
dziglar; make sure the metal lines are not cross-threaded, or over tight to crack housing.
Hope this helps; Thanks and please rate me high;
Rich
RPM Northwest