Question about 2004 Ford Escape
The car is misfiring on cylinder 6 and have a multiple misfire I have changed the spark plugs three times since October and replaced the boots back in late November It happens when it rains and sometimes the light flashes off after a bit but comes back on.
The flashing light means the problem is serious and you should not drive the truck. This probably happens when you are accelerating.
Since each cylinder has a coil, it could be moisture in the main wiring harness or a connection.
Could also involve the fuel injectors. You could have water in the gas for example.
The code means that cylinder is not producing power, not a lack of spark.
Posted on Jan 13, 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: misfire on cylinder 6 at idle
I mention motocraft because too often I hear about challenges with plugs on fords. I too purchased the big buc iridiums and had 6/8 success. Belong to another truck site and read a lot about this and cel's. If the light is flasing in and out this could be a vacuum problem. I belive Relaga is speaking of the two vacuum hose coming out of the intake. One will be right after the MAF and runs to the engine, and the other after IAT sensor and runs toward the throttle body. Take a peek at the intake and ensure it is connected properly and securely. As it runs up toward the throttle body and right after the air filter you run into the MAF sensor. then a vacuum hose, then the Intake Air Temp sensor, then a straight shot to the throttle body. The air intake assembly connects to the throttle body. Check the entire assembly for any leak and those vacuum hoses. What I also suggest is you remove the entire air intake and clean it. First Disconnect the negative terminal on the battery. The sensors disconnect at their wiring harnesses and you do not have to remove the sensor itself (inside tube). As you look inside the intake (once taken apart/off) you will see the sensor (s) inside through the grommet. You can purchase a bottle of CFC MAF/Electronic cleaner at any auto parts store for about $9 and spray the hell out of the sensors like you would spray a cockroach in the face. About 4-5 seconds. NEVER put your finger inside and touch the sensor. The two tiny wires you see are very fragile and delicate and should not be handled. But the spray is fine. Wait 20 minutes for the electronic parts to dry and re-assemble. Double check all connections and reconnect the sensors and then negative cable on battery.
Hey just found this thread for us. Check it out.
Posted on May 05, 2009
not only did the problem switch cylinders, it switched banks. cylinders 5&6 are on the drivers side and 4 is on the passenger side. i would recheck all wires to make sure you have the correctly installed.
dr. 8 7 6 5 7 4 coil
pass. 4 3 2 1 3 5
6 1 coil
Posted on Mar 18, 2010
SOURCE: diagram of spark plug
Check this for 4.6 or 5.4 sizes engine...
2004 Ford Expedition 4.6 liter V-8 VIN "W"
2004 Ford Expedition 5.4 liter SOHC V-8 VIN "L"
Hope this help (remember comment and rated this).
Posted on May 05, 2010
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There are few possibilities that can cause engine misfire
issues. It can be issue with spark plugs or faulty spark plugs. Also get the
compression test done for cylinders. If any of cylinder shows low compression
then required, then that particular cylinder will cause misfire.
Also get obd codes scanned, the error code will let you know
which cylinder is misfiring or all cylinders are misfiring.
For your trouble shooting I suggest you to refer the help
oinks below. It has step by step details for many engine misfire issues.
Click the link below:-----
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This will help.
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