Question about Ford Explorer
Check the voltage at every cylinder and its coil one by one.Any of the one is not getting appropriate voltage.,Either its got loose or overheated .The overheating can be due to many reasons.Oil got leaked or spilled on the injectors.Check the voltage at each coil pack one by one.It should show 12 volts.If its low then this will be the problem and the cylinder has to be replaced. The other reason for misfiring is Problem is fuel system.The fuel pump or fuel filter blocked. Check out.Also check the fuel pressure.A oil getting mixed with the gas will make the vehicle misfire. Another cause of misfire is blocked IAC or Dirty MAF. That is.Idle Air Control Valve or Mass Air Flow Sensor. This both has to be checked.
It is possible that you have a fuel delivery problem. You will need to check the fuel pressure with a gauge and hose long enough to drive and watch what the fuel pressure is doing especially under a load.
The idle air control (IAC) valve on my 4.0 L OHV is on the driver's side of engine mounted on the side of the upper "plastic" intake manifold.
The MAF sensor is located in the air duct between the air filter and the throttle body.
this all can be possible for misfiring.
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Posted on Jul 14, 2010
Check the compression on that cylinder,make sure the valves are seating,then if all this is good,there is a intake leak somewhere,but make sure the spark plug is firing,if it is not,it is most likely the computer.Also check the fire to the injector,and make sure if it is pulsing or not,if it is not,replace the computer.
Posted on Jul 11, 2010
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Posted on Jan 02, 2017
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