I have had the plug and coil replaced in that cylinder. Also had a compression check done they said it had 100 pounds???? What ever that means. They said the valve spring was good that it might have carbon built up on the valve or maybe a cam or crankshaft sensor????? I was also told it might be a fuel injector, need help Please..
Friend, replace the fuel injector on that cylinder. That's really good compression and nothing at all wrong with the valves. That misfire is what we call a dead cylinder and it is repairable. #4 cylinder is the front cylinder on the drivers side. You must remove the coil pack, disconnect vacuum lines from the front of manifold, pop all the electric connections off, remove the 6 bolts securing the upper plenum chamber and lift it off the manifold. Unclip the fuel injector wire connection from #4 injector at this point. There are small bolts securing the fuel rails to both heads to remove so the fuel rails can be pulled up to get to the fuel injectors, the will stay in the fuel rail when lifted, and it's a stiff removal because of the rubber O-rings holding the injectors in. When you have that up and able to get to the injector, just twist it out of the fuel rail, put the new one in it's place after a light lubricant is put on all the O-rings on top and bottom #4 and all the lower O-rings that are exposed, guide all the injectors back in their ports and push them all down until the fuel rail mount brackets are in position for the bolts and put the engine back together.
SOURCE: 96 ford explorer code p0301 mis fire 1
Sounds like either a bad plug wire, or coil pack. This is about all that would cause the misfire.
SOURCE: miss fire
Wow, you definitely covered the bases. The next step is to find out whats going on inside the engine. Try doing a compression test, that will tell you if you not only have good rings, but also what condition your valves are in. If the misfire is always in the same cylinder, I would check the cam on that side of the engine, its not outside the realm of possibility you have a worn cam lobe. Just out of curiosity, did the check engine light come on?
SOURCE: 2001 Ford Taurus - won't start. Cranks really good
George,
Lots of possible choices... but junk yard coil as a replacement (easy for you to do) can eliminate that potential problem for just a few dollars.
If that fails, have a friend help you confirm that you have spark - by pulling a plug wire and holding it against (near) a good ground. If it sparks over 1/2 inch - it is not spark.
If that fails, pull a plug wire off a spark plug. Crank the engine for 10-15 seconds. Now remove and inspect the plug for gas wetness. If wet, it is not fuel flow.
If that fails, it could be timing, timing belt, or a large number of other issues - most cheap to fix but time consuming to locate.
Do the above tests then come back and let us know what you find!!
SOURCE: Getting a code of misfire on cylinder 2, Bank 1 and lean code
Higher compression usually only happens when extra oil is introduced in to the cylinder.Your rings seem good due to the good compression .If there is a worn valve guide in that cylinder this would allow oil to seep into the cylinder .Also allowing for extra rocker arm movement which could be your chirping noise and cause a rough idle.The lean code sounds like something different like the is still a vacuum leak.It sounds like you know cars well ! I hope this helps
SOURCE: 2001 FORD TAURUS 24 VALVE DOHC MOTOR WILL NOT START
i have a 2001 taurus 24valve dohc 3.0 engne i have a bad coil pack what steps do i need to do to change the coil pack
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.
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For your trouble shooting I suggest you to refer the help
oinks below. It has step by step details for many engine misfire issues.
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Click the link below:-----
Ford Explorer Cylinder Misfire?
http://whoisbyme.blogspot.in/2012/06/ford-explorer-cylinder-misfire.html
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Engine Misfire codes on Chevrolet Malibu?
http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
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Cylinder 6 Misfire?
http://howtobyme.blogspot.com/2011/12/cylinder-6-misfire.html
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Misfire on cylinder 4?
http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html
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While stop engine idles like cylinder missing?
http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html
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Ford Explorer 5.0L: Engine Miss?
http://whoisbyme.blogspot.in/2012/06/ford-explorer-50l-engine-miss.html
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Oil on spark plugs and car misfires?
http://technoanswers.blogspot.in/2012/02/oil-on-spark-plugs-and-car-misfires.html
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Can cylinder misfire Damage the Catalytic converter?
http://schematicsdiagram.blogspot.in/2012/02/can-cylinder-misfire-damage-catalytic.html
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Car misfires and error code P0306 and P0303 is shown?
http://technoanswers.blogspot.com/2012/01/car-misfires-and-error-code-p0306-and.html
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Chevrolet K1500 No spark, random misfire
http://repairhelpcenter.blogspot.com/2012/11/chevrolet-k1500-no-sparkrandom-misfire.html
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2004 Ford F150: Engine Misfire and Lean Code?
http://whatisbyme.blogspot.in/2012/05/2004-ford-f150-engine-misfire-and-lean.html
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1995 Toyota LS: Misfire at idle or low RPM
http://whatisbyme.blogspot.in/2012/04/1995-toyota-ls-misfire-at-idle-or-low.html
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Toyota Corolla:
Random Misfire?
http://technoanswers.blogspot.in/2012/04/toyota-corolla-random-misfire.html
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2006 Ford Freestar: Misfire on Cylinder Number 2?
http://whatisbyme.blogspot.in/2012/06/2006-ford-freestar-misfire-on-cylinder.html
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This will help.
Thanks.
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