Question about 2001 Hyundai Tiburon

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Autozone says it's #4 not firing and to put some gas treatment in. and new plugs and wires. still misfiring.

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Check ignition coil pack for spark, at ignition coil with engine running disconnect one spark plug wire at a time, they should all spark, if no spark out of any of the coil pack, replace coil pack.

Posted on Nov 09, 2010

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Cylinder 3 misfires


I would move no3 injector to another cylinder and see if the fault moved . If not the problem is in the injector wires or ECM plug If it moved I would consider a new injector .

Dec 29, 2013 | 2002 Ford Mustang

1 Answer

1998 Mercury Sable Cylinder 5 Misfire


I would try a spark plug first (cheapest) about $5 for a platinum plug. I would see if the spark plug is firing before putting it in. Pull the spark plug wire off of existing plug put it on the new plug and ground the plug. Crank over or start the engine, is it firing? If not spark plug wire would be the next cheapest. You may be able to get just one wire, but I would replace the whole set. If it still is not firing the coil pack is probably bad about $60-70. If it is firing in the above steps it could be the injector is not working. You could drive the car as is, but it would drive me nuts, I can't stand something that doesn't run right. You will naturally be low on power and probably not doing your gas mileage any good either.

Jan 05, 2012 | 1998 Mercury Sable

2 Answers

Hey guys i have a 2000 intrepid with a used engine just put in. at high rev the check engine light flickers then goes off. Took a trip to West Linn OR from Weiser ID, on the way back the check engine light...


Dysturbedr1,
In a word, NO- don't worry about the gel. There are 2 different kinds of "goop" that is sold for installing new plugs- one is to lubricate the spark plug threads, and the other (which I think you are calling the "gel") is to lubricate the boot and direct fire coilpacks. These are for making it easier to install and replace your plugs and coilpacks....nothing more.
The flickering check engine light is indicative of a misfire condition, which makes sense since your codes said the same thing. The most common cause for this is using a non-premium grade of gasoline or a gas with a high ethanol content (very common in the Mid-West) in a high compression engine such as yours. I had a 2001 Subaru with a high compression 3.0L 6 cylinder engine that did the exact same thing.... it ran fine, but a lower grade of gas would cause a "misfire" code. This is because lower grades of gas burn hotter and the piezo sensors in your engine are very sensitive- the explosion that takes place in a cylinder is much more pronounced with a lower grade gas to the sensor, even though it sounds fine to human ears.
Fill your car with permium, then go back to autozone and have them clear the codes. You will probably not have it happen again unless you go back to a lower gas grade.... and stay away from the Idaho Gasahol!

Good Luck, and Thank You for using FixYa!

Apr 07, 2011 | 2000 Dodge Intrepid

2 Answers

Code 303 and 304 and check engine light plugs have not been changed 119.000 miles is it tune up time


P0303....Cylinder 3 Misfire Detected

P0304....Cylinder 4 Misfire Detected

sounds like a new set of HT leads and plugs wouldnt go amiss(fire wires) weird name that fire wires HT stands for high tension leads in proper english .

Mar 07, 2011 | Ford F-150 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

Car is misfiring


If you are experiencing any back firing along with the missing, this may be a valve spring that is not preforming properly. i would keep that in mind. i recommend checking the distributor/coil and the wire as well. It wouldn't hurt to take that plug out and give it a good look as well.

Mar 16, 2009 | 2001 Buick LeSabre

1 Answer

Im recieving a readout stating that #4 plug is misfiring


yes and no. the first thing to do is replace the fuel filter. then replace the #4 spark plug. as far as gas additive, i recommend STP fuel treatment. pour this in before you fill up. also put in some high octane gas for one fill-up

Mar 16, 2009 | 2001 Buick Regal

1 Answer

2004 GMC sierra cylinder miss fire code


Have you put new sparks plugs in it. If you havent I would try them first. Only run the ac delco plugs listed for the truck. I have had many people come threw the shop with misfiring and trucks running like **** and come to find out they put bosch or ngk plugs in it. Your manual says there good for 100,000 miles but there really only good for about 75,000 or so. Also run some lucas fuel treatment or b12 chemtool. both you ad straight to the gas tank. If it calls for one can for 20 gallons buy two and double the treatment it wont hurt you engine.

Jan 31, 2009 | 2004 GMC Sierra 2500

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