Wow. You have thrown a lot of parts at this problem. Why was the fuel filter replaced twice?
By any chance where the codes read prior to it not srarting? If so what where they?
Some quick questions That should point you in the right dirrection.
Stong ar weak spark at all six plugs?
Are the plugs dry, fuel soaked or oil soaked?
Does the rotor (inside the distributor)turn while trying to start the engine?
What is fuel pressure at the fuel rail?
Post back with results or ask your mechanic to check these first.
Below is a more detailed list of potential problems.
In order for an engine to run you need 5 things.
Ignition source (spark)
Fuel (proper amount)
Air (proper temperature and amount)
Timing (All 4 of the above must occur at the proper time)
Did you check for spark at each plug?
Where the plugs dry, fuel soaked, or oil soaked?
What is the condition of the cap, rotor and wires?
Nice fat blue spark or skinny yellow spark?
You need to check for pressure at the fuel injector rail.
Check the injector circuit for a fuse and test it.
Test the fuel pressure regulator. Make sure the vacuum lines are good, connected and have vacuum.
Are the injectors firing?
Are the fuel lines crushed or leaking?
Is the engine coolant temp sensor connected and functioning properly? (Feeds computer info that affects air fuel mixture)
Is the air cleaner serviceable?
Is the throttle body clean, tight and working?
Is the idle air control valve clean and functioning?
Is the mass air flow sensor clean and functioning?
Is the air temp sensor connected and working properly?
Have a compression test done.
Check ignition timing.
Check valve timing (Timing belt ever replaced).
Goiod luck and let us know. :)
Sunday, February 11th, 2007 AT 7:45 AM