Take each plug lead off one at a time and hold it close to an earth on the car, (engine block) Turn engine over and see if there is a spark comming from the lead to the earth. Most time's it is better if you just replace the coil pack, they are knowen to give prooblems.
Grounding of an ignition system's leads may cause damage to the ignition coil and or electronic engine control system. This procedure is not advised.
Use an approved tester at the end of the sparkplug lead and follow the procedures for outlined for it's use.
http://www.ehow.com/how_4509339_replace-ignition-coil-pack-ford.html
On the Ford Explorer that has the EDIS ignition system ( Electronic Distributorless Ignition System ) instead of a distributor it has a coil pack with 6 coil pack towers for the V6 engine
On a 1996 Ford Escort , 1.9 liter four cylinder engine : The 4 towers on the ignition coil pack are numbered : 4 - 3 1 - 2 coil pack plug * the coil pack tower numbers are by the 4 bolt holes * it takes Motorcraft part number DG-435
f150 ignition coil sequence
#4 coil pack is on passenger side back.
Ford uses a distributorless ignition system or D.I.S. It does not have a distributor. it has a coil pack.
coil---3---4 pack--2---6 plug---1---5
follow your spark plug wires from the engine and they will lead directly to the coil pack. it is what they plug into
The COIL PACK TOWERS are numbered : coil----3---4 pack---2---6 plug----1---5
On a 1999 Ford Escort : For the 2.0 liter Single Over Head Cam four cylinder engine The 4 towers on the coil pack are numbered : ( 4 ) - ( 3 ) ( 1 ) - ( 2 ) coil pack plug ( the tower numbers should be raised by the 4 bolt holes ) * the SOHC 2.0 liter engine uses the Motorcraft DG-435 coil pack on your 1999 Ford Escort * ( the engine firing order is 1 - 3 - 4 - 2 )
It doesn't have a distributor , there is a coil pack with the EDIS ( Electronic Distributorless Ignition System ) coil---3---4 pack--2---6 plug---1---5 ( coil pack tower numbering )
a There are coil "pack" for ignition. 6" pack" carburetors.