I got a new computer changed all my spark plugs and coil's and still not getting fire to the plug of the number 4 cylinder.

That's the diagram

Please read about misfire diagnosis and repair here.

Firing order is 1, 5, 3, 6, 2, 4. Number 1 cylinder is up front. Why would you need the firing order, this engine does not have plug wires, each plug has its own coil pack, each coil pack is controlled by the computer.

4-cylinder:

Firing Order: 1-3-4-2

3.1 liter:

Firing Order: 1-2-3-4-5-6

Hello mikew564.The first diagnosis was number 2 or 3 cylinder not firing. Once you changed the coil, the check engine light went off. When the light came back on again, did you get it diagnosed again to find out if the problem was the same?... 2 or 3 cylinder not firing????

First of all, there is NO extra wire/ground on the coil/ignition wiring (see images below). The spark plugs and ignition plug wiring can be checked for arcing, corrosion, resistance and can be checked for cracks in the insulators or worn electrodes (and spark gap) by a competent mechanic.
If you are having the same issue (2 - 3 misfire), there are several techniques for eliminating the plug wires or spark plugs. Spray water on the plug wires to see if they are arcing. Swap plugs from cylinders 2 & 3 with cylinders 1 & 4. If you still have a 2-3 misfire, check/inspect/examine the coil connector pins & coil harness to the coil(s) themselves.

STANDING IN FRONT OF CAR FROM LEFT TO RIGHT CYLINDERS ARE 1 2 3 4 NOW LOOKING AT COILS STANDING FRONT CAR THIS IS COIL SPARK PLUGS WIRES LOCATION WRITE THESE NUMBERS DOWN IN A ROW LIKE NUMBER 2 ON TOP 4 BOTTOM 2 3 1 4. THESE NUMBER IN A ROW IS WHERE YOURS SPARKS LOCATION FROM COILS TO CYLINDER SPARK PLUGS.

Hope this helps. The ignition coil:

• changes low-voltage pulses from the PCM to high-voltage pulses.
• fires 2 spark plugs simultaneously.
• has 3 transformers.
  • One transformer fires the spark plugs for cylinders 1 and 5
  • One transformer fires the spark plugs for cylinders 2 and 6
  • One transformer fires the spark plugs for cylinders 3 and 4

Spark plug wires:

• carry high-voltage pulses from the ignition coil to the spark plugs.

The spark plugs:

• change high-voltage pulses to spark at the gap, which ignites the fuel and air mixture.

The firing order is 1-4-2-5-3-6.

These things operate on what is known as a wasted spark system. There are two coils each one has two spark plug leads coming from it. One of the coils fires cylinders number 2 and 3 the other one fires cylinders number 1 and 4 . Each coil fires both leads at the same time. Hence one of the sparks is wasted each time. If you could see the pistons going up and down in the bores you would notice that numbers 1 and 4 go up and down together and that numbers 2 and 3 go up and down together. When 1 and 4 are at the top. 2 and 3 are at the bottom. and vicea versa . If number 1 is on the firing stroke number 4 will be on the exhaust stroke. Also the same for number 3 (firing) number 4 (exhaust) Thats not exactly what you asked i know. But i think it will help you to understand how the plugs fire on most Japanese across the frame 4 cylinder motors.

ck if you have spark at the coil for that cylinder. check the plug wire closely. if it has spark at the coil, then replace all the spark plug wires.

You didn't specify whether you have the (4) cylinder or the (6) cylinder engine..... I have a 2004 Hyundai Sonata 2.4L 4 cylinder and I just changed the spark plugs in it. I believe that the 2005 2.4L engine is the same. To locate and change the (4) spark plugs on a 2004 Hyundai 2.4L 4 cylinder engine: Remove the (4) 12mm bolts from the decorative plastic engine cover. Remove plastic cover from engine and place it off to the side out of your way. Standing in front of the car, the (4) spark plugs are located laterally (left to right) in the recessed area underneath where the plastic engine cover was removed. Note: This engine has (2) coils....They are located above spark plugs number (2) and (3) from left to right. Starting with the fist spark plug on the left: Remove the spark plug cable by pulling straight up on the insulated connector. Using a spark plug socket, remove the old spark plug and install a new one in it's place. To access the second spark plug from the left, remove the electrical connector and the spark plug cable wire from coil number (1) and then remove the (2) 12mm bolts that secure the coil to the engine. Spark plug number (2) is located directly under the coil. Lift the coil straight up removing the insulated connector from spark plug number (2). Using a spark plug socket, remove old spark and install a new one in it's place. Repeat same procedures for spark plugs number (3) and (4). Note: If you have the (6) cylinder engine, the front (3) sparks pluge are readilly accessible but in order to access the (3) rear spark plugs, you will have to remove the intake manifold