Question about 1997 Hyundai Elantra

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Check engine light keeps coming on. replaced spark plugs, wires, and coil. tester says cylinder 4 missing

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Try replacing the tester sensors. sensor could just be the culprit .

Posted on Nov 15, 2009


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On my chrvy HHr ss 08 I keep getting a code for misfire on #4 cylinder. I have replaced the plugs the coil for that cylinder also the varable advance solinoids and the light still comes on. it at first it...

What engine does it have ? 2.0, 2.2 , 2.4 L ? could have bad injector, vacuum leak . Do you have battery voltage at the coil on pin 4 pink wire with black strip ? Get a spark tester or put screw driver in the plug wire end hold near ground and have someone crank over the engine .Is there spark ? yes ? no Do you have a good ground at pin # 1 black wire ? pin two is a ground in side the ECM , pin 3 is a control signal from PCM to turn the coil on an off ! I Have had these with bad connection at coil cause miss- fires !

Dec 14, 2014 | Cars & Trucks

1 Answer

Engine not firing on # 3 cylinder

Spark plug or coil likely problem. Might put a spark plug in the #3 wire and crank it over and see if it sparks. Plug will need to be grounded and someone to watch or crank engine for you. Leave original plug in hole while doing this. If you have a timing light. Attach it to the wire with it plugged to the original spark plug and start engine. If the light flashes the the coil and wire has power. If no light then more likely a coil. Depends on year of auto as well. Most of the newer ones have a coil for each plug. If its a older one... likely a plug or plug wire.

Dec 06, 2013 | Nissan Cars & Trucks

1 Answer

Went through some water van died after sitting a day it started up but engine light is now on and sputters when stopped went to auto zone they say i have a 2 cylinder misfire what excactly does this mean...

It means that the number 2 cylinder (passenger front of the engine) is not working. Whether its spark, fuel, or mechanical. The first thing you can check is if there is spark to the cylinder. With the engine running remove the spark plug wire from the number 2 spark plug. Listen or look for spark out of the plug wire. If there isn't than you can check for spark out of the coil pack. Do this with a test light or spark tester. With the engine off remove the number 2 spark plug wire from the coil pack. With the spark tester installed or the test light hooked to ground and placed on the #2 coil post have some body crank the engine over. If ther4e is no spark that you might have a bad coil pack. If there is spark than possibly the plug wire is bad.

You should not drive it with a misfire as you could ruin the catalytic converter which is very expensive to replace.

Dec 01, 2010 | 2000 Dodge Caravan

1 Answer

Error code reads #4 cylinder misfire??? possible probs & fixes

I'm assuming your trouble code is P0304 and you have the 5 cylinder engine.
take out the spark plug, does it look normal? No foreign materials on it, like coolant or oil? If it has coolant on it, you have a blown head gasket.

If plug looks ok, put the wire back on the end of it, pull the wires off the other plugs, hold the #4 plug with wire up against the engine to ground the plug threads. Have someone crank the engine while you look for a spark. If no spark, try putting the plug into another wire. If still no spark, plug is bad. If it sparks in another wire, wire #4 or coil #4 is bad. In this last case, you can swap wires with another coil to determine if it's the wire or the coil that is bad.

If #4 plug sparked in wire #4, ignition is working and problem is with the cylinder. Run a compression test on all cylinders. You can borrow or rent the tester. Take all plugs out and screw the tester into each plug hole one at a time. Crank the engine a few revolutions and read the gage. Write down the pressure, release it from the gage and go on to the next cylinder. If #4 comes up short, you have a burned exhaust valve or blown head gasket.

Please let me know if you have any questions or need more instructions.

Nov 01, 2010 | 2006 Hummer H3

3 Answers

#1 plug is miss-firing.I have replaced plug and wire,but keeps miss-firing only on#1 plug.have been told that coolant is possibly getting in #1cylinder.also I have been told #1 coil could be bad.witch is...

Could only be a few things. The coil #1, Fuel injector #1, Stuck intake or exhaust valve, or blown head gasket allowing coolant into cylinder #1. Use a spark tester to check the spark coming out of cylindr #1 if checks good then ohm test the injector when it is warm. Check other injectors to compare. Do a compression test on cylinder #1 and test other cylinders to compare. If cylinder is low compression suspect valves and or head gasket. If compression is low then het a leak down tester to test if a valve is broke or sticking. On your sable i would suspect injector or coil most likely.

Oct 10, 2010 | 2000 Buick LeSabre

2 Answers

My check engine light is on and the code is reading p0304 what could be the problem

You have a Misfire at Cylinder #4 meaning:
Dirty, fouled or malfunction Spark Plug at #4 Cylinder. Remove the Spark Plug and check the igntion (spark end).
Ignition (Spark Plug) Wire malfunction for #4 Cylinder.
Misfire from the Coil/Distributor at the #4 connection from Cylinder #4.
Get a Spark Plug/Wire/Coil/Distributor tester and check the Spark Plug, Wire and Coil.
I always recommend changing everything in sets meaning: Change all Spark Plugs and Wires.
Let me know if this helped, or if you have additional information or questions. Feel free to contact me at!

Feb 18, 2010 | 2003 Ford Expedition

2 Answers

2000 Neon started missing but when I drive it fast it runs better, and the check engine light is on. Also, I changed the spark plugs but 1 spark plug has oil on it. What do you think it is?

you need to check the check engine light first. then the miss can be from the oil on the spark plug i would replace that spark plug with oil on it and replace the valve cover gaskets this will prevent the problem from happening again

Feb 12, 2010 | 2000 Dodge Neon

2 Answers

My 96 Saturn sc2 wont turn over or start.

Was there oil/coolant in cylinders when they were pulled?

Jun 22, 2009 | 1992 Saturn SL2

1 Answer

Spark on only 2 of the 4 cylinders

On dis ignition systems if you have an open circuit plug wire you will lose spark on both cylinders of the coil. So however you are checking for spark,(screwdrivers or spark testers) Check cylinders 1 and 4 at the same time. A good way to eliminate the possibility of a bad plug wire is to take both wires off the coil and start the engine. Spark should jump from the coil tower to the coil mounting bolts. If it doesn't replace the ignition module.

Jun 11, 2009 | 1990 Oldsmobile Cutlass Calais

2 Answers

Error code P0350

P0350 Ignition Coil Primary/Sensor Circuit If there is no voltage at either of 2 ignition coil group during 32 ignitions, the PCM determines that a fault exists and a DTC is stored..

May 19, 2008 | Hyundai Motor 2004 Sonata

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