Where is the spark plug in the 1999 ford econoline v6, I want to replace but I need some help/

https://www.fixya.com/cars/troubleshoot

Your van uses a coil on plug ignition system. Use the following procedure to change the plugs.

1. Remove the engine cover and air cleaner assembly.
2. Disconnect the ignition coil electrical connector.
3. Remove the ignition coil mounting bolt.
4. Remove the ignition coil.
5. Remove the spark plug.

i would check the plug wires and the coils you check the plug wires for bad spots at night start the motor up and look at the plugs if you see a spark arch out the wire and to a peace of metal then the plug wires need to be replace.

4.2L V6: Firing Order: 1-4-2-5-3-6 Diagram: http://autorepair.about.com/library/firing_orders/bl-fo-3841.htm
4.6L V8: Firing Order: 1-3-7-2-6-5-4-8 Diagram: http://autorepair.about.com/library/firing_orders/bl-fo-3843.htm
5.4L V8: Firing Order: 1-3-7-2-6-5-4-8 Diagram: http://autorepair.about.com/library/firing_orders/bl-fo-3844.htm
6.8L V10: Firing Order: 1-6-5-10-2-7-3-8-4-9 Diagram: http://autorepair.about.com/library/firing_orders/bl-fo-3849.htm
Hope this helps!

hello my name is Lee i work on cars this how you can break it down first get a spark plug then un plug one spark plug then plug the spark plug in the wire that you un plug have some one crank it and if it don't get spark it is the coil or distributor coil. and it you get spark then its not that then check fuses relays. now if it an't making no noise and batt charge then it is the starter now if its not that its cranking it could be your crankshaft sensor replace that and if not that it could be timing if not u can email me at [email protected]

So , does it have fuel pressure? have you checked the Inertia Switch? You dont replace spark plugs or filter because all of a sudden it wont start.

You most likely need a set of plug wires,that should get rid of both problems.

check the air bypass valve on the throttlebody at the air inlet try tapping on it and see if it will idle ok

on the V6 motor,the right plugs are under the three rubber plugs on the right [front]side valve cover.the intake manifold needs to be unbolted & moved aside to gain access to the left plugs.

Honestly it's probably just dirty spark plugs. Did you pull any of the spark plugs and inspect the tips for build up? A couple things to remember:

1.) If the timing chain broke, the valves wouldn't be opening so you wouldn't have any air coming out of the exhaust during crank. You said it smells like you're getting fuel, so I'm assuming that means you're smelling the exhaust fumes, right?

2.) The crank sensor tells the ignition system when to send a spark to the plugs. If you're getting good spark, it's unlikely that the crank sensor is faulty.

If it's too soon for spark plugs to need replacing, check your sensors. A faulty oxygen sensor for example could cause your engine to run 'rich', resulting in faster crud build up on spark plug tips.