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Misfire 4th cylinder

My car has been idling a little shaking or bumpy and my check engine light came on. Ive already had it checked and it says i have a bad down stream sensor and a 4th cylinder misfire. Ive already chnaged the plugs, wires,and had an oil chnage. Any suggestions on what to do about the misfire? Also i need a cap and rotor because they look bad. Please help have a 98 acura integra ls no vtech

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  • 161 Answers

Could be the ignition coil. Also could be a compression problem. Work on the misfire then see if the bad sensor goes away.

Posted on Dec 28, 2013

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6ya6ya
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SOURCE: Engine sputter

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Posted on Jul 17, 2008

bunnydawg
  • 5158 Answers

SOURCE: low compression in #1and #2 cylinders 1993 eclipse gs 1.8l

burned valve is likely the culprit.... or bad rings.... hook air up to that cyclinder one at a time.... and listen where the air is escaping... be aware that the motor will rotate till the piston is at the bottom of it's rotation. if it's a burned valve you will have to remove the head and replace it but somewhat easier job then replacing the rings. darn almost forgot.... it can also be a blown head gasket.... same procedure but you might need a brush and some soap water to test for an air leak at the side of the head. when you are done spray some wd 40 on it to get the water off so the spark plugs do not arc.


Robert

Posted on Sep 26, 2008

polarcycle
  • 1392 Answers

SOURCE: check engine light codes and troubleshooting

Sounds like you have a vacuum leak for the lean code and the misfires. I don't see a 473 code in my manual, but have a 463. The 463 is for the fuel level sensor open or voltage high.

Posted on Jun 02, 2009

  • 34 Answers

SOURCE: misfire on #6 and #8 cylinder 1996 Dodge Ram 1500

Check the spark plug wiring . There are several places where the wires cross each other. These wire cross points MUST be at right angles to each other. Or you will have a misfiring problem.

Posted on Jul 07, 2009

  • 543 Answers

SOURCE: 4th cylinder misfire in '96 eclipse rs(5 speed if it makes a dif)

is it misfining ,or is the code just old and needs to clear?

Posted on Oct 12, 2009

Testimonial: "thnx..ill check it out and hopefully get it fixed if not look out for my next posting"

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1 Answer

2005 Nissan Xterra Shaking Problems.HELP?


each one of the cylinders have there own seperate coil, if cylinder 5 is misfiring then the coil is bad. One cylinder not firing will cause the vehicle to run really rough hope this is helpful

Jul 06, 2012 | 2005 Nissan Xterra

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Honda accord ex 2001 check engine light suddenly came on, car started to idle roughly


If it's running rough, chances are that it's misfiring. If the Check Engine light is flashing/blinking, it is definitely misfiring.
If that's the case, drive it as little as possible... Or straight to the mechanic because the more you drive it while it's misfiring, the higher the chance is of you ruining your catalytic converter.

Apr 24, 2012 | 2001 Honda Accord

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My 93 olds cutlass ciera keeps misfiring and stalling, i have change the spark plugs, fuel filter, o2 sensor, maf sensor, and still stalls and misfires any ideas?


For engine misfiring problem check the help links mentioned below. Click the link below to go through the troubleshooting procedure :---- Engine misses and truck jumps? Hard to down shift? Issue with high gear only? http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html

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Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

-----------
While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

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Engine Misfire codes for car?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
Engine Misfire codes?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

--------------
Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.html

-----------
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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This will help.

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Feb 14, 2012 | 1993 Oldsmobile Cutlass Ciera

1 Answer

Missfiring detected in OLDSMOBILE intrigue 2002 3.5L


For engine misfiring problem check the help links mentioned below. Click the link below to go through the troubleshooting procedure :---- Engine misses and truck jumps? Hard to down shift? Issue with high gear only? http://technoanswers.blogspot.in/2012/02/engine-miss-and-truck-jumps-hard-to.html

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Bad miss at idle?

http://technoanswers.blogspot.com/2012/01/bad-miss-at-idle.html

-----------
While stop engine idles like cylinder missing?

http://schematicsdiagram.blogspot.com/2012/01/while-stop-engine-idles-like-cylinder.html

------------
Engine Misfire codes for car?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html
Engine Misfire codes?

http://schematicsdiagram.blogspot.com/2011/12/engine-misfire-codes-on-chevrolet.html

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Misfire on cylinder 4?

http://schematicsdiagram.blogspot.com/2011/12/misfire-on-cylinder-4.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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This will help.

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Jan 30, 2012 | 2002 Oldsmobile Intrigue

2 Answers

My truck keeps ideling at the light the it will cut off it shakes a little then cut off i checked the battery and alternator and starter its all ok what could be wrong


This sounds more like it may be misfiring, when you get a misfire the engines idle is lower than normal and also the engine will shake as all cylinders are not firing and inturn cause the engine to stall out, the check engine should be on if its being doing this for a while (few days ).have the computer scaned and see if the computer has picked up a misfire, the code will tell you which cylinder or cylinders are mis firing, from there you can check the sparkplugs and also the coils. there are many auto part stores that will scan the computer for the codes at no charge and give you a readout. good day

Aug 31, 2011 | 2001 Ford Expedition

1 Answer

Vehicle missing,shaking,engine light comes on


Misfire could be a number of things:
a) spark plugs - change them if used over 15K miles - inspect/regap.
b) spark plug wires - change them if over 15K miles - inspect
c) ECM (electronic control module) - test with HEI (high energy ignition) tester.

The shaking tells me that the engine is running on less than its normal compliment of cylinders - the shaking is produced by the imbalance caused in the engine by one (or more) cylinder(s)
not firing at all.

The "Check Engine" light probably is coming on due the the misfire condition. Go to Pep Boys or
Advance Auto Pats, where they'll tell you (free) your codes causing the "Check Engine' light to be
lit - the code coming from your truck's computer will probably be one or more of:
P0300 - Random/Multiple Cylinder misfire detected
P0301 - Cylinder 1 misfire detected
P0302 - Cylinder 2 misfire detected
P0303 - Cylinder 3 misfire detected
P0304 - Cylinder 4 misfire detected
P0305 - Cylinder 5 misfire detected
P0306 - Cylinder 6 misfire detected
P0307 - Cylinder 7 misfire detected
P0308 - Cylinder 8 misfire detected
P0313 - Misfire detected with low fuel

Jun 23, 2011 | 2004 Ford F150

1 Answer

My 2000 honda accord lx's check engine light has been on but now it's blinking ever since my car started shaking really bad.


A blinking check engine light is a signal that a damaging misfire is occurring in one or more cylinders. Your car is shaking because of the uneven power loss between firing cylinders and those that are misfiring. If you take your car to a major auto parts store, they will read out the stored trouble codes in your car's computer memory--and they'll do it for free. These codes will tell you which cylinders are misfiring and will help you find out why. Do it soon before more engine damage occurs--$$$$.

Mar 22, 2011 | Honda Accord Cars & Trucks

2 Answers

4th cylinder misfire in '96 eclipse rs(5 speed if it makes a dif)


There may be a problem with the coil pack causing this misfire or the timing is off enough to cause late or early firing of the plug.

Oct 12, 2009 | 1996 Mitsubishi Eclipse

1 Answer

Engine skiping at idle.


If it is actually skipping, the check engine light should be on for a misfire and tell you what cylinder is missing. If it is a little bit of a rough idle, could be plugs, fuel, bad motor mount, or a bunch of other things.

Jun 09, 2009 | 2003 Cadillac CTS

1 Answer

Engine misfire :(


put a vacuum gauge on the engine,the needle should fluctuate back and forth, take a timing light and instead of putting on the number one plug put it on the plug wire with the problem.point the light at the gauge if the needle looks like it is steady you have a problem with one of the valves or the cam shaft.

Apr 22, 2009 | 1991 Nissan 300ZX

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