Question about 1998 Porsche Boxster

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Misfire on 4, 5, 6, cylinders. new plugs and coils fitted

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  • Porsche Master
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It could possibly be the plug wires that are bad.

Posted on Aug 05, 2010

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Posted on Jan 02, 2017

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03jeep lbertyrandom missfire cyl 2 4 6check engine light flashing


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Nov 28, 2015 | Cars & Trucks

1 Answer

Why is there cylinder 2 misfire?


It may just be a coil breaking down or a bad spark plug. Try swapping one of the coils over with the faulty one and see if the misfire happens on that cylinder and cylinder 2 runs fine. If it does then swap the faulty one for a new coil. Don't know about your car but most now have individual coils for each cylinder that fit directly onto each spark plug.

Aug 17, 2015 | 2006 Mazda Tribute

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Misfire on Cylinder 3 swapped plugs between 3 and 4 on Pontiak Aztek 2003. Misfire remained on cylinder 3. Swapped ignition coil 3 and 6 with ignition coil 1 and 4 misfire still on cylinder 3


Try a new plug wire on cyl 3 if that doesn't fix it you could have a bad valve or compression problem on cyl 3 Try doing a compression test also If it has injectors for each cylinder you could have a bad injector for cylinder number 3

Dec 04, 2014 | 2001 Pontiac Aztek

1 Answer

2012 V6 Frontier misfire cylinder 4, new fuel injector didn't fix the issue


If it has a coil for each cylinder then it could be the coil on that cylinder but if it doesn't then it could be plug wire,sparkplug or fuel injector related ( injector wire harness or pigtail ).

Mar 27, 2014 | Nissan Frontier Cars & Trucks

1 Answer

Number 3 and 4 are not firing from coil on 2002 subaru outback 2.5


its faulty coil.

Get the compression test done on each coil.these will let you know if its faulty coil or not.

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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.

Nov 28, 2012 | Cars & Trucks

1 Answer

Misfire on #4 cylinder when accerating on a 2005 renderous


I would start with switching a coil, swap # 4 coil to another spot and see if the misfire moves, the coils on this van operate to cylinders so move it and see if the misfire changes then you know its the coil and if it does not then next thing is to check spark plug and wire, replace the plug and wire and if that solves it then tune up van, good day,

Oct 14, 2012 | 2005 Buick Rendezvous

1 Answer

Misfire cylinder 6... 4.0L jag s type 2000


MISFIRE ON CYLINDER 6 COULD BE FAULTY SPARK PLUG OR BAD IGNITION COIL OVER THE SPARK PLUG,YOU COULD HAVE HAVE CLOGGED FUEL INJECTOR.CLEAN ALL FUEL INJECTORS USING A CAN OF SEAFOAM TO 3/4 TO FULL TANK OF GAS SEE IF NUMBER 6 MISFIRE CLEAR UP, IF NOT COIL OR FUEL INJECTOR COULD BE AT FAULT.ALSO CHANGE 6 SPARK PLUG FIRST.BEFORE BUYING NEW COIL OR FUEL INJECTOR THAT WAY YOU KNOW PLUG NOT THE PROBLEM.

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1 Answer

Misfiring on cylinder 2+3,replaced oxygen sensor before cat and machine print out still shows oxygen sensor and is still misfiring.


First,call a shop or dealer to make sure the proper plug is on the proper coil location,unless you are POSITIVE that they have not been messed with recently.Then Check the spark plug wires.Also,push down on the plug wires and trace them back to where they originate(coil pack),and push down on them to ensure tight fit.If it's still bad,check the plug wires.Remove them from the plugs and make sure they are not broken.If it is a 4 cylinder,the coil pack may operate those 2 cylinders on one side and 1+4 on the other.If you do anything such as replacing the coil pack,make diagrams of the wire's traced out locations from spark plugs to coils.If you get one wrong,it will be worse.If the plugs have never been changed yet,it may simply be that they have fouled.Greg

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2 Answers

99 cougar v6 P0352 misfire cylinder 3 and 4 replaced igntn coil..


Had the same problem, car was misfiring on cylinder 3 and 4. replaced wires, plugs, and ignition coil. still misfired on the same cynlinders. turned out the main engine wiring harness plug in was coming loose. spent well over $150 on the unneccesary repairs and ultimately fixed the problem wit a $3 bag of wire ties to hold the plug in...

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1 Answer

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ignition mod. grounds,pcm or timing belt could all be it but, I would have to look at timing first.

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