WHY WOULD MY VAN KEEP MISFIRING AFTER REPLACING PLUGS AND WIRES?

2002 Ford Windstar

Tiny

Tera

September, 4, 2011 AT 11:09 PM

The code reader says #2 cylinder misfiring. Van idols fine but under pressure it hesitates and stumbles

FOUND 2889 RELATED QUESTIONS

Engine Miss

52 ANSWERS
12 IMAGES

12 Answers

Tiny

rasmataz

September, 4, 2011 AT 11:18 PM

Check the sparkplug, compression and injector for no.2 cylinder

Tiny

Tera

September, 4, 2011 AT 11:24 PM

The spark plugs are fine

Tiny

Tera

September, 4, 2011 AT 11:25 PM

How do you clean the injector?

Tiny

JDL

September, 4, 2011 AT 11:25 PM

Did you visually check for spark at the spark plug in question? You can use a digital multimeter, one lead touches the spark plug wire, don't take the wire loose or penetrate the insulation, the other leads goes to ground, metal part of engine. Engine running, This is an inductive reading, may show around 1/2 volt, compare to other plug wires. This test isn't conclusive, but, is non-invasive. An example, if the reading on 5 plug wires is around 1/2 volt and the other shows zero volt, I know where to start.

Tiny

JDL

September, 4, 2011 AT 11:28 PM

I didn't see you Raz, have a good day.

Tiny

Tera

September, 4, 2011 AT 11:32 PM

I just changed the spark plugs they are brand new and so are the wires

Tiny

rasmataz

September, 4, 2011 AT 11:48 PM

http://www.2carpros.com/articles/engine-hesitates

Could be caused by one of the following below

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Knock sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it and keep testing.

Tiny

Tera

September, 5, 2011 AT 12:10 AM

How do you take it out and clean your injector

Tiny

rasmataz

September, 5, 2011 AT 12:13 AM

Your best shot is have the fuel system flush out-

Tiny

Tera

September, 5, 2011 AT 12:15 AM

Where do I go to have it flushed out?

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