Have you checked the HT Lead? or if is the coil failure? Also check if there is not any fault on the previous - if the injector on that cylinder is working correct and not pouring the fuel.Since you removed the spark plugs have you checked if No:6 was wet or dry?
no I haven't on the lead as for it being wet, it was dry. going to check with a compressor on 6 and thank you for you reply. I will check the lead when I get back from going nuts.
#6 coil looked a little burnt but I'm not sure what to look for. compared to the others I would say it looks different.
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SOURCE: code says #1 cylinder misfire. What do I look
check the distributor rotor to see if there is any burn marks on it, and check the point of contact between the contact on the distributor cap, and rotor. It also helps to take a small paint brush, and clean everything with some kerosene. Also, see if there is any oil in the cylinder. if not, the fuel injector is partially/fully clogged.
SOURCE: misfiring on number one
there has to be clogg somewhere i would chech the entire intake system its costly some people have the ball to do it look it up on you tube
SOURCE: 2002 Nissan Xterra Supercharge 3.3L
Check the condition of the plugs you have installed. See if you can find one which has an irregular color. The spark plug should be dry and brown in color. The problem could be just in one or a few cylinders. More than one cylinder may mean a problem with the ignition coil. If it were just one we can isolate it into the components connected to the cylinder.
If you have the SES light on as well, it may be a bad O2 sensor or a bad catalytic converter. Check for the wiring that goes to the O2 sensor. The computer may not be getting the correct reading on how much fuel burned causing the misfire.
SOURCE: 1998 Nissan Altima 2.4L auto
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
I know the elm327 plastic 1.4 can help you reset the code....
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.
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since you spot the no:6 coil different looking in condition,before you replace it,do one last test,remove coil from first cylinder and put it to no:6 and no:6 cylinder coil to cylinder 1 and start the car. If the missfiring goes to one ,surely the coil is blown and you have to replace it.
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