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Old 02-25-2010, 03:33 PM
RangerSteve RangerSteve is offline
2000 XLT 3.0 2WD 81,000M
Join Date: Feb 2010
Posts: 62
Default Code P0306 Cylinder 6 misfire.......

Any common faults for this?
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Old 02-25-2010, 06:05 PM
XJ88 XJ88 is offline
Liking the Ford Ranger Forum
Join Date: Feb 2010
Posts: 27

A few possible problems. such as the spark plug in cylinder 6, or the plug wire or coil.
check the plug make sure its ok. if its ok then check your plug wire by switching it with another one to rule out that problem.
02 3.0 V6 XLT
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Old 02-25-2010, 06:10 PM
Tom Tom is offline
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Join Date: Nov 2008
Posts: 6,830

Quick google search found this:

What does that mean?

A P0306 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #6. on Facebook
Symptoms may include:

* the engine may be harder to start
* the engine may stumble / stumble, and/or hesitate
* other symptoms may also be present


A code P0306 may mean that one or more of the following has happened:

* Faulty spark plug or wire
* Faulty coil (pack)
* Faulty oxygen sensor(s)
* Faulty fuel injector
* Burned exhaust valve
* Faulty catalytic converter(s)
* Running out of fuel
* Poor compression
* Defective computer

Possible Solutions

If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

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.
2006 Ford Ranger Sport 4.0 2WD on 32x11.50R15s
-3" Doetsch Spindle Lift

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Old 02-25-2010, 06:31 PM
smakes smakes is offline
Join Date: Sep 2009
Posts: 3,005

running out of fuel def. i threw a cel today, read it and its P0301, wich is a cylinder 1 misfire, from running out of gas
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Old 04-16-2010, 03:18 PM
jkelly213 jkelly213 is offline
Learning to use the forums
Join Date: Apr 2010
Posts: 2
Default Re: Code P0306 Cylinder 6 misfire.......

this keep happening to me, i have changed coil pack,plugs and the wires(3 times for them) and it was due to arching on cylinder 6 wire. this is a pain in the ass.
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