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Step by step to troubleshut ignition problem( no sparks)

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Remove plugs , put plugs in caps and hold them to a good earth on engine then crank engine and see if any have spark , if you got one then alternate that plug between all cylinders and see if they spark ! you can also remove caps from ht wires and cut back slightly , also use a multi metre and check the resistance of each cap dont have too much because they do need replacing now and then !

Posted on Jan 03, 2014


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1 Answer

My 96 Cadillac Eldorado has no spark coming from quoil

quoil ? Coil ! This is a very complex ignition system ,rather replacing parts an costing yourself a lot of money do yourself a favor an take it to a ASE certified repair shop ! Could be any number of things ,from one of the two crankshaft sensors , cam sensor , ignition control module , engine computer etc.. Are there any codes stored in the PCM ? That's the first thing that should be done , have a scan tool hooked up !
The ignition system uses a waste spark method of spark distribution. During cranking, the Ignition Control (IC) module monitors the crankshaft position sensor signals. The signals are used to determine the correct pair to spark first. After the crankshaft position signals have been processed by the IC module, it sends a fuel control reference pulse to the PCM. When the PCM receives this pulse it will command all eight injectors to open for a priming shot of fuel in all cylinders. After priming, the injectors are left OFF for the next eight fuel control reference pulses from the IC module (two crankshaft revolutions). This allows each cylinder a chance to use the fuel from the priming shot. During this waiting period, a cam pulse will have been received by the PCM. Now the PCM begins to operate the injectors sequentially based on true crankshaft position. However, if the cam signal is not present at start-up, DTC P0340 will set and the PCM will start fuel delivery in a random pattern with a 1 in 8 chance that fuel delivery is correct.
The crankshaft position sensor signals are used only by the IC module. It is used for spark synchronization and to initiate reference pulses only (not passed to the PCM).
Was the Powertrain On-Board Diagnostic System Check performed?
Go to Step 2
Go to A Powertrain On Board Diagnostic (OBD) System Check


Are DTC(s) P0231, P0232, P0322, P0601, P0602, P1376, P1631, P1632 OR P1634 set?
Go to DTC(s) that are set.
Go to Step 3


  1. Install spark tester J 26792 on one spark plug wire and ground that cylinders companion cylinder plug wire.
  2. Crank engine while observing the spark tester.
  3. Repeat the above steps on at least one more cylinder.
Does the spark tester indicate a crisp blue spark on all tested cylinders?
Go to Step 4
Go to Electronic Ignition (EI) System Diagnosis (Ignition System Check)
When any condition is suspected to be caused by or related to the ignition control system, the first step in diagnosis should be to check for stored PCM DTCs. Diagnose all DTCs before further action is taken. If no DTCs are stored and the condition is still present, refer to the following:

Jun 05, 2015 | 1996 Cadillac Eldorado

3 Answers

Engine stop

If theres no spark from the spark plugs then you would have to replace them?

Jul 12, 2008 | 1993 Toyota Corolla

1 Answer

I have a wv microbus 2.3i 1998,it just went of while i'm at a speed of 120km/h since than it doesn't want to start.the coil is get current its not sparking,what might be the...

Dear Sir,
As you said coil is getting currant but not sparking further to spark plug , then check few things.

1 Check the connector is proper fitted on ignition coil.

2. No lose connection with pin of connector or pin should not be lose.

3. All pins are clean of connector and no rust is there.

4. Check High Tension cable (cablle black couler which run from ignition coil to spark plug) if found ok then try with new cable if it wont start.

5. It is problem with ignition coil replace it problem will solve.

Problem can solve at any step from 1 to 5 i did arrange all steps by easy to check and less expanses, final step will more expansive than earlier step.if any issue let me know. thanks


Nov 16, 2010 | 2005 Volkswagen Microbus

2 Answers

What does the ignition coil do?

the ignition coil changes low voltage from the battery (12 volts) to high voltage (about 50,000 volts) to fire the spark plugs and ignite the fuel in the engine cylinders and drive the piston down

Oct 21, 2010 | 1999 Chevrolet Malibu

2 Answers


Hi. here's the procedure on how to replace your spark plugs. Spark plug location is in this procedure.

  • Park the car in cool, shady area and allow the engine to cool.
  • Step 2 Remove the parts of the Grand Am engine that hinder access to the spark plugs. For a 2.2 L engine, remove the ignition coil housing. For a 2.4 L engine, remove the bolts that hold the retaining ignition coil and disconnect the electrical connector. Pull the assembly straight up and away from the engine to remove it. For a 3.1 L engine, remove the air cleaner. For a 3.4 L engine, remove the windshield wiper module cover and rotate the engine for service access to the rear spark plugs.
  • Step 3 Locate the spark plug wire and grab it by the spark plug boot. Twist the boot in both directions and pull back to remove the wire.
  • Step 4 Insert the spark plug socket over the old spark pull and unscrew it from the cylinder well. Remove the old spark plug.
  • Step 5 Lubricate the threads of the new spark plug and screw it into the cylinder well.
  • Step 6 Test the tension and adjust it to the required setting. It needs to be 15 ft-lbs. for a 2.2 L engine, 16 ft-lbs. for a 2.4 L engine, 13 ft-lbs. for a 3.1 L engine, and 11 ft-lbs. for a 3.L engine.
  • Step 7 Reconnect the spark plug wire and twist it to lock the plug in place.
  • Step 8 Repeat Steps 3 through 7 for the remaining spark plugs.
  • Step 9 Replace all of the parts that were removed from the Grand Am in Step 2 to reach to the spark plugs.
  • Aug 12, 2010 | Pontiac Grand Am Cars & Trucks

    1 Answer

    I am attached the mother Bord to the moniter but the VGA could no

    - remove all pci card. ide or sata cable and all connection from cd rom, hard disk, floppy drive.
    - check your ram. ( scrub with rubber and broom your ram slot with brush.( or troubleshut with new one) and then restore to ram slot.

    if that problems still appear.
    - troubleshut your buildin display with the good display card(new display card)

    if that problem is still appear.
    - troubleshut your power supply with the new one.

    if that problems is still appear.
    - troubleshut your processor with the new one but speed of your processor must be same.but if your dont have same speed processor, your can try useing the processor supported by motherboard.

    If your was do all the tip but your computer still no display.

    i recomended your change to new motherboard support by all your hardware.

    hope this tip can help your problems....

    Jul 10, 2010 | Intel D845GVSR Motherboard

    1 Answer

    No video signal to monitor GA-MA78GM-US2H.

    firstly troubleshut your monitor with working monitor

    if problems result same.

    open your computer cassing and troubles shut ram and display card.

    then problem still appear

    troubleshut your power supply

    and lastly troubleshut your motherboard if that problem still no display.

    No display problems is associated with hardware problems

    Jul 08, 2010 | Gigabyte Computers & Internet

    2 Answers

    Intel desk top board no display

    - remove all pci card
    - check ram ( scrub with rubber eraser and broom ram slot with small brush, or your can troubleshut with new ram )

    if still no display
    - troubleshut with display card ( New display card )

    if still no display
    - troubleshut power supply with new power supply or any power supply is still good in condition( working power supply )

    if display still not appear and your was do all tip above finally
    you must troubleshut your motherboard with all your hardware. but your must use motherboard supported all your hardware.

    Jun 10, 2010 | Intel D845GVSR Motherboard

    1 Answer

    Engine turns over butdoes not fire

    check step by step to find the problem. You mean the spark plug has no spark, ok, remove the spark plug no.1 into a cable and try to spark between spark plug and the cable, and if no spark, remove the spark plug cable from the ignition coil, and spark between the cable and the ignition coil, if there's no spark, replace your ignition coil, because probably is dead. ok

    Jan 01, 2010 | 1998 Dodge Ram 1500 4WD

    1 Answer

    How do i change the spark plugs on a 2003 kia rio


    1. Disconnect high-tension code from spark plug.
    2. Remove the spark plug.
    3. Connect the spark plug to a high tension code.
    4. Hold the spark plug with insulated pliers 5~10mm from a ground.
    5. Crank the engine and verify that there is a strong blue spark.
    If there is no spark, inspect the following points.

    Step Inspection Action

    1 Check for good connection of ignition coil Yes Go to next stop.
    No Repair or replace
    2 Check if resistance of high-tension leads are OK Yes Go to next step.
    No Replace
    3 Check if the ignition coil is electrically charged
    1) Ignition switch "ON"
    2) Check if the engine coil (+) is electrically charged
    Yes Go to next step
    No Check the wire harness between ignition switch ignition coil and ECM
    4 Check if resistance of ignition coil is OK
    Primary : 0.36~0.44Ω (at 68°F (20°C))
    Secondary : 10.9~13.3kΩ (at 68°F (20°C)) Yes Go to next step
    No Replace
    5 Check if ECM is OK Yes
    No Replace


    Do not attempt any maintenance on spark plug if engine is hot.
    1. Disconnect negative battery terminal.
    2. Carefully remove high-tension leads.
    3. Use compressed air to blow any dirt or debris from around spark plug hole.
    4. Check that spark plug fits squarely in spark plug socket and remove spark plug.

    Raise a vehicle and install SST(OK552 131 001) in order to replace cylinder 2, 4, 6 spark plug.


    1. Install spark plug into cylinder head.

    Tightening torque : 18~22lb-ft (25~30N·m, 2.5~3.0kg-m)

    2. Reconnect high-tension leads.
    3. Reconnect negative battery cable.

    Jul 17, 2009 | 2002 Kia Rio

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