Question about 2007 Ford Econoline
I have a 2007 ford e250 super duty 4.6L with a p0307 dtc code. cylinder 7 misfire and would like to know what the most common fix is
Pull the coil from the plug, Remove the spark plug and inspect for any moisture in the plug hole. If you see a black line down the side of the plug. Called carbon tracking, replace the plug. To see if coil is firing move it to another hole and restart. ford's misfire monitors are fun to set. Takes up to 45 minutes to get them to pick up under specific conditions. Good Luck.
Posted on Jan 16, 2013
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Posted on Jan 02, 2017
It could be carbon deposits on valve seats keeping valves from totally closing. You can try getting you a can of motorcraft PM3 top end engine cleaner and get engine up to operating temp then remove one of the small vacuum lines from the intake and draw the contents of the can slowly into the engine.After you have drawn in the contents shut engine off and let it soak for about 45 minutes then crank it back up and let it run until it clears. Now it will smoke like a forrest fire while you are doing this so don't be alarmed,just tell the neighbors you are spraying for mosqitos.This may cure the problem. If not you may be looking at a valve job.
This can be verified with a compression test if this is what is causing it.
Posted on Feb 05, 2009
SOURCE: #7 cylinder misfire dtc p0307
Best place to start would be with spark plug and have a look at it. Wet with fuel would indicate no spark, carbon build up, bad wire or plug etc. If your familiar with testing at spark plug to confirm spark getting to plug, then do that first. If no spark to plug, coil pack would be next, or distributor parts such as cap, wires, rotor etc. If getting spark, then try cleaning and checking connections to injector. There are other more expensive things that may be causing it, but lets try the cheapest, most common and easiest first to narrow it down, and get back to me/us, if still having problem.
Posted on Dec 03, 2009
Cylinder #2 will be the second cylinder from the front on the passenger side, and here is a diagram to help assist you.
Posted on Jul 14, 2010
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SOURCE: 02 f150 5.4 dtc p0307
A code P0307 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
* 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.
Ford's will sometimes flag the wrong cylinders on misfires. Usually a coil will fix Ford's misfire. Spark tester to me just verifies that the the circuit is good. Dont relay on this to say the coil is ok.
Keep us updated.
Posted on Feb 02, 2011
What year is the truck ? if its a 1998 im sure its never had a tune up i would start with replacing the spark plugs and there is a very good chance that a coil is also bad
Posted on Jan 16, 2009
Tips for a great answer:
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are the codes start with the basics inspect plugs wires cap rotor and if all checks out do a compression test
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