Right side bank have 3 spark plugs with white ashy deposits,

NO JOB TOLD AT ALL (WHY ASK?)

OXY SENSORS CONFUSING? B2S1 FAILING, <<< THIS
OR TIMING A CAM SHAFT?
misfire codes? P0302?


bank 2 is the other bank ,where #1 cylinder bank 1, IS NOT, located
but I guess you do not know here #1 SPARK PLUG is.??????
well on all V engines
number 1 is offset most forward bank.(MEANS closer to the crank pulley)
3.7L Duratec (227kW/301PS)

order is
1-4-2-5-3-6

FACING THE CRANK DAMPER PULLEY #1 LEFT FRONT BANK
SO #2 IS RIGHT.


https://youtu.be/xHOx0prn5fM


HOW IS THIS BELOW


3.7 transmission on right.

hood up facing engine

spark plug 5 is center of the 3 cop coils bank 2
facing it 4,5,6(bank 2)
far side 1,2,3 (bank1)

Follow the #1 spark plug wire down to the spark plug. That is bank 1.

If you are in front of the vehicle facing the radiator, Cylinder (1) will be the first spark plug closest to you on (your) right hand side. This is what is referred to as the (left Bank).
Left bank is 1,3,5,7. from front to firewall.Right Bank is 2,4,6,8. from front to firewall.
The coil bank is numbered from (your Left to Right) as you are facing the firewall,2,3,4,7,8,5,6,1.

running lean bank one; suggest a bad 02 sensor on bank one,check engine light on? suppose so, or you would'nt have codes.may be a bad coil pack on bank one. it does'nt run without a backfire right? your best thing to do is this. check engine fire to plugs that supply fire to bank one,it may have a red fire to plugs on bank one side, but you need blue fire to plugs on bank one side.[the best spark to plugs will always be blue] you may only need to replace part of the engine coil pack, they will have numbers on them[coil pack] and which cylinders that they supply spark to. if i'm not mistaken, you will be looking from front of car, look on passenger side of motor for a bad spark plug, or may even be a worn spark plug wire,inspect your spark plug wires for a worn place where the wire is exposed to ground the spark from the spark plug. pull the spark plug out and check it for carbon build up also. for carbon build up, it will be covered with hard black substance. recommend if you do replace plugs, nepindenso, no ac plugs[cheap] no ac delso,cheap. the better the plug, the better the car runs with great mileage. hope this helps,merry christmas, and as always,if you need further assistance,please repost your question and an expert will be happy to assist!

The firing order is 1-2-3-4-5-6.
Looking at the engine facing the crankshaft pully the cylinders are 1-3-5 on the left bank (closest to firewall) and 2-4-6 on the right bank (closest to radiator) going from front to back. (passenger side to driver side)
From the front of the car looking at the coil packs you wires should go on 1-4-6-3-2-5 going from left to right. (passengerside to driver side)

Hi is your standing in the front of your vech. the spark plugs on your right side or drivers side are odd numbers 1 3 5 so the middle will be number 3.

bank 1 is one side of the motor and bank 2 is the other side bank 1 is the side with the #1 spark plug

bank 1 refers to your driver's side and bank 2 refers to your passanger side. sensor 1 is pre cat and sensor 2 is post cat. Your vehicle has a v-6 so bank 1 sensor 1 is on the drivers side before the catalytic converter. It will be on your exhaust pipe between your exhaust manifold and your catalytic converter.

start with the side of the engine that has the cylinder closest to the radiator.
that first cylinder on that side is number one.from there back it is 3 5 7 .
so thats 1357.it would be the third one back.
on one bank is 1 3 5 7 and on the other bank is 2 4 6 8 just start with the cylinder closest to the front of the truck.