Question about 1996 Chevrolet Lumina Mini

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Engine misfiring I've installed new spark plugs and wires but it keeps misfiring. Is there an order to follow?

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  • yadayada
    yadayada May 11, 2010

    not sure what u mean about order, do u mean firing order, then yes.

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If you didn't remove and replace the plugs one at a time, then you may have installed the wires out of order. I don't know the order for your motor by heart but you should be able to look it up on the internet. Bad plug wires or plug wires that are not seated on the plug securely can also cause a misfire. I would check the wires by twisting the boot slightly then pulling it out. Be sure that you hear a "pop" sound as you press on the boot. Then you know it is properly secured to the plug.

Posted on Apr 28, 2010

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My engine keeps sputtering. I have a 2005 pontiac grand am 3.4 liter V6. I've replaced the spark plugs due to a misfire, I've replaced the cranshaft sensor, I checked the timing on the timing


fuel pump could be going bad check fuel pressure that will make it sputter,if that not the case check fuel filter.
do a compression test on cylnders

Mar 01, 2013 | 2001 Pontiac Grand Am SE

1 Answer

The Chevrolet Dealer Mechanic replaced the spark plug wires on my 1994 Impala SS. Three weeks later the engine started to misfire. I took the car back to the dealership and asked them to replace the spark...


What kind help you need?
You already know the problem is. So just replace the burn one.
and make sure secure it. Do not let it loop to touch the exahust
you should be good to go.

(Dealer machanic is same as the other one. They only have better equipment and new information available)

Mai Lor

Feb 27, 2013 | 1994 Chevrolet Impala

1 Answer

My 2005 ford f250 is having random mis-fires and multiple mis-fires. Can you give me any advice


Hi there:

The misfire detection monitor, a software strategy built into the computer, is designed to detect an engine misfire. The computer can also normally identify the specific cylinder in which the misfire has occurred. A misfire is nothing more than a lack of combustion, which can be caused by poor fuel quality or metering, low compression, lack of spark or unmetered air entering the engine. There are other possible, less obvious causes as well, such as uncommanded Exhaust Gas Recirculatin (EGR), flow. When the misfire monitor detects a misfire, it will trigger the check engine light with the specific cylinder number as the last digit in the P030X code. For instance cylinder 1 misfire is P0301, cylinder 2 is P0302 etc. In this case we have either multiple cylinders misfiring, or the computer simply can't determine the specific cylinder, and as such we are left with the P0300 in computer memory.


Possible Causes:
Fuel injectors, related wiring, sensors and computer issues
Running out of gas, or poor fuel quality
Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
Incorrect Fuel Pressure
EGR system concerns: leaking EGR valve or restricted ports
Base engine concerns: low compression, valve train problems and timing issues
Ignition system concerns including, but not limited to:
Faulty spark plugs
Faulty coil or related wiring
Ignition module or related wiring issues
Ignition related sensor faults or wiring issues


Diagnostic:
To diagnose a P0300 trouble code we begin by checking for proper fuel and ignition system operation, and then follow up with the less likely causes listed above, such as EGR and EVAP system problems. New style coil on plug applications have a high failure rate, and can be concluded faulty by swapping to another cylinder and checking to see if the misfire moves to that cylinder. This is a quick check if a capable scan tool or oscilloscope is not available. Always make sure the basic maintenance is done first and that things such as the fuel filter, air filter, spark plugs and spark plug wires are in good working order, as these are all possible candidates for a problem. If necessary, check for wiring and component concerns.


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Thank you for using FixYa, have a nice day.

Aug 07, 2012 | 2005 Ford F 250 Super Duty

1 Answer

The car has 28,000 on it. the motor is a 3.6, and scanner codes keep coming up as injector #6 and misfire on #6 cylinder. i have installed all new injectors, new coil on #6, and all new spark plugs. also...


Check for voltage at the plug, 12volts. Also check with a noid light when it is acting up. Wires tend to break right at the plug. check this to include pulling the wire and the plug. I've had them hanging together with just a strand or two and when it heats up it doesn't make a very good connection.

May 07, 2011 | Cadillac CTS Cars & Trucks

2 Answers

Misfiring after replacement of spark plugs and wires


If it wasn't misfiring before. Make sure you have the proper gap on the spark plugs. Make sure you have the wires connected in the correct order. If you have the old wires, you may want to end up trying those one at a time to make sure you don't have a defect wire either.
Thank you,
Lee

Mar 04, 2011 | 1994 Ford Escort

1 Answer

Describe your how fix my pontiac 2000 montana Problem changing spark plugs



Inspection

Inspect for the correct routing of the spark plug wires. Improper routing may cause cross-firing. Inspect each wire for any signs of cranks or splits in the wire. Inspect each plug wire boot for tearing, piercing, arcing, carbon tracking or a corroded terminal.
If there is any corrosion, carbon tracking or arcing indicated on a plug wire boot or terminal, both the plug wire and component it was connected to should be replaced.


Removal & Installation

3.5L Engine

  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Remove the left side spark plug wires from the spark plugs.
  3. Remove the left side plug wires from the retaining clips.
  4. Rotate the engine for access as follows:
    1. Set the parking brake.
    2. Shift the transaxle into neutral.
    3. Remove the engine mount strut bolts. Swing the engine mount struts aside.
    4. Install the Engine Tilt Strap J-41131.
    5. Pull on the engine in order to rotate the engine forward.
    6. Tighten the strap.

  5. Remove the right side spark plug wires from the spark plugs.
  6. Remove the plug wires from the retaining clip.
  7. Remove the spark wires from the ignition coils.
  8. Remove the plug wire assembly from the engine.
    NOTE If you are replacing the spark plug wires, the spark plug wire conduit and retaining clips should be transferred to the replacement wires.

To install:
  1. Install the right side plug wires to the ignition coils and then the spark plugs.
  2. Install the spark plug wires to the retaining clip.
  3. Rotate the engine back to the original position.
  4. Install the left side spark plug wires to the ignition coils and then to the spark plugs.
  5. Install the spark plug wires to the retaining clips.

3.9L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Remove the intake manifold cover.
  3. Remove the left side spark plug wires as follows:
    1. Disconnect the left side spark plug wires from the spark plugs.
    2. Disconnect the left side spark plug wires from the ignition coil.
    3. Remove the left side spark plug wire clips from the intake manifold and heater inlet and outlet pipe.
    4. Remove the left side spark plug wire assembly.

  4. If removing the right side spark plug wires, the engine must be rotated for access as follows:
    1. Set the parking brake.
    2. Shift the transaxle into neutral.
    3. Remove the engine mount strut bolts. Swing the engine mount struts aside.
    4. Install the Engine Tilt Strap J-41131.
    5. Pull on the engine in order to rotate the engine forward.
    6. Tighten the strap.

  5. After rotating the engine, remove the right side spark plug wires as follows:
    1. Disconnect the right side spark plug wires from the spark plugs and ignition coil.

  6. Remove the right side spark plug wire clip from the ignition coil bracket.
  7. Remove the right side spark plug wire assembly.

To install:
  1. Install the spark plug wire assembly.
  2. Install the right side spark plug wire clip at the ignition coil bracket.
  3. Connect the plug wires to the ignition coil and spark plugs.
  4. If the engine was rotated for access, return the engine to the original position.
  5. The remainder of the installation is the reverse order of removal.

Feb 05, 2011 | 2000 Pontiac Montana

1 Answer

I have a misfire and the plugs r white i drive a 2001 honda crv


If someone put the wires on on in the wrong firing order pattern or one or more of the plug wires are bad the engine will misfire. White residue on the plug is probably due to the engine running hotter than normal caused by the misfire. Try replacing the spark plugs and spark plug wires.

May 08, 2010 | 2001 Honda CR-V

3 Answers

What would cause 3 of the 6 plugs to misfire. 1998 buick century 3.1 . thanks


Check for trouble codes and check spark control module and coils

Mar 09, 2009 | 1998 Buick Century

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