2000 ford excursion 6.8l v10 will start on first try when cold, but it takes 2-3 times of cranking when engine is warm.

SOURCE: Hard to start when engine warm

crankshaft sensor may be going bad

SOURCE: Interior Lights Stay On

You have a door adjar light sticking in one of the doors or deck lid.
Take you a can of WD40 open each door and spray it into the latch on the on the side of the doors then open and close it a few times,this will take car of the problem most of the time. Start with the driver door first it is usually the one.

SOURCE: 2000 v10 excursion would crank over but not start.

Does your keys look different? Some keys require a sensored key to start it up.

ZJ Limited

• 17989 Answers
• Posted on Mar 30, 2010

SOURCE: Fuel Filter replacement on Ford 2000 Excursion - V10

1.- For identify the right fuse, check your 2000-Ford-Excursion-Owners-Manual position 112, 20AMP (Maxi Fuse); details in the page 138 and next.

2.- Ford Excursion, Expedition, Lincoln Navigator 2000-2005, Fuel Filter - Removal & Installation

NOTE A fuel line disconnect tool is needed for this procedure.
CAUTION Fuel injection systems remain under pressure, even after the engine has been turned OFF. The fuel system pressure must be relieved before disconnecting any fuel lines. Failure to do so may result in fire and/or personal injury.

1. Before servicing the vehicle, refer to the precautions section.
   
2. Remove or disconnect the following:
   Negative battery cable
3. Relieve the fuel system pressure.
   Fuel lines from the fuel filter. Have a drain pan handy to catch any residual fuel once the lines are separated.
4. On newer models, disconnect the fuel lines from the filter as follows:
   Safety clip from the male hose Install and push the fuel line disconnect tool into the female fitting.
5. Remove or disconnect the following:
   NOTE Inspect the fuel lines for any damage after the fuel is finished draining. Male and female fittings from the filter Fuel filter from the bracket and the retainer, if equipped. Note the direction of the flow arrow so the replacement filter can be installed correctly.
   
   
   
   Fig. Typical fuel filter mounting along an under-vehicle frame rail
   

1. Install or connect the following:
   Fuel filter into the mounting bracket with the flow arrow pointing in the correct direction Fuel lines to the fuel filter. Align and push the male tube into the female fitting until a click is heard. Pull on the fitting to ensure that it is fully engaged, then install the safety clip.
2. Lower the vehicle to the ground.
   NOTE When the battery has been disconnected and reconnected, some abnormal drive symptoms may occur while the Powertrain Control Module (PCM) relearns its adaptive strategy. The vehicle may need to be driven 10 miles (16 km) or more to relearn the strategy.
   
3. Connect the negative battery cable.

SOURCE: rattling noise when cold start. noise dissapear

You problem is most likely just lifter noise. This is common with a lot of Ford engines with self adjusting lifters. Although lifter noise is bothersome it doesn't pose a serious problem. Unless your engine starts to miss or your gas mileage drops way off lifter noise is just an annoying problem.
I would recommend that you add some Sea Foam Engine Treatment($6-$8) to your oil. This is not an oil treatment it's more of an engine cleaner. If this works you'll need to add it every 2nd or 3rd oil change.
If this doesn't take care of the problem then depending on your engine you may have adjustable rockers that would allow you to remedy the problem. If not, your options are limited to living with it or replacing the lifters and possibly other valve train parts.