PLEASE SOMEONE HELP!!!! I have a 2006 Yamaha r1 that will only run on 3 cylinders. It has spark on only 3 coils #3 cylinder is not sparking and I've swapped coils to see if that changed the cylinder not firing and it did not. What would cause only my number 3 cylinder coil not to fire? I've checked the plug connection and it seems good. Anyone else have this problem? Yamaha yzf1000

Here is the firing order and spark plug wire routing diagram for a 2006 Chevy Impala LT 3.9 V6:
Firing order: 1-2-3-4-5-6
Spark plug wire routing (starting from the driver's side):

• Cylinder 1: connect to the coil tower closest to the driver's side headlight
• Cylinder 3: connect to the coil tower next to cylinder 1
• Cylinder 5: connect to the coil tower next to cylinder 3
• Cylinder 2: connect to the coil tower closest to the passenger side headlight
• Cylinder 4: connect to the coil tower next to cylinder 2
• Cylinder 6: connect to the coil tower next to cylinder 4

Note: Make sure to route the wires properly to avoid cross-firing.

Try the HT lead on that cylinder by starting car in the dark and look out for spark coming out of that lead while running. Or get a spare lead and replace on that cylinder.hope this helps

What is compression on cylinders?

P0353 CHEVROLET Description The ignition system on the vehicle uses individual ignition coils for each cylinder. The Powertrain Control Module (PCM) controls each ignition coil operation. The PCM sends a ON/OFF signal to energize the ignition coil to create a spark at the spark plug when a spark is required at the cylinder.

Possible Causes - Ignition Coil harness is open or shorted
- Ignition Coil circuit poor electrical connection
- Faulty Ignition Coil 3
- Faulty Powertrain Control Module (PCM)
Read more: http://engine-codes.com/p0353_chevrolet.html#ixzz21kWvhhBc

I'm assuming your trouble code is P0304 and you have the 5 cylinder engine.
take out the spark plug, does it look normal? No foreign materials on it, like coolant or oil? If it has coolant on it, you have a blown head gasket.

If plug looks ok, put the wire back on the end of it, pull the wires off the other plugs, hold the #4 plug with wire up against the engine to ground the plug threads. Have someone crank the engine while you look for a spark. If no spark, try putting the plug into another wire. If still no spark, plug is bad. If it sparks in another wire, wire #4 or coil #4 is bad. In this last case, you can swap wires with another coil to determine if it's the wire or the coil that is bad.

If #4 plug sparked in wire #4, ignition is working and problem is with the cylinder. Run a compression test on all cylinders. You can borrow or rent the tester. Take all plugs out and screw the tester into each plug hole one at a time. Crank the engine a few revolutions and read the gage. Write down the pressure, release it from the gage and go on to the next cylinder. If #4 comes up short, you have a burned exhaust valve or blown head gasket.

Please let me know if you have any questions or need more instructions.

please explain to me how to replace a cylinder without removing the engine block.
I can see mybe a spark plug, spark plug wire, or a coil pack
but removing a cylinder or even a piston, impossiable

your machanic is an idiot

to solve your problem of runing rough
have someone with enough commen sense to do a full tune-up and full filter change

Most likely the driver in the computer,that means the computer will have to be replaced,just check the connection at the computer to make sure it is good ,and tight,if it is,the computer will have to be replaced to repair the problem,sorry,If this was helpful,at all please rate,thank you.

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.

The firing order is 1-3-4-2

Number one is the one at the pulley end of the motor and number 4 is at the flywheel end of the motor.

System uses a Distributorless Ignition System (DIS) with 2 ignition coils. Cylinders No. 1 and 4 use the same ignition coil. Cylinders No. 2 and 3 use the same ignition coil.

First remove spark plug. #8 plug is, if sitting in truck, left rear plug. Have someone crank engine while you hold spark plug, connected to plug wire, ground plug to ground. Check spark. If no spark, remove plug wire from coil, connect test light from coil to ground, see if you get spark, if no spark replace coil. Leave cylinder #8 open to air to dry any unburnt fuel in cylinder.