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As you did not say which vehicle this can only be a general answer Unlikely that a faulty coil would cause an engine to knock. Very possible it would cause bucking, if the coil is failing there would be a lack of spark. This would cause bucking/missfire, which may cause the engine to shake on it's mountings possibly causing a knock from contact with the vehicle frame.
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You have no ignition spark on a Renault cleo 1.4rt What could have gone for there to be no spark you have bought a new coil and still no spark.?
ignition switch The TDC Sensor is probably dirty, remove it and give the tip a clean, also the connecter.
Do you have to go through the steering column to replace an ignition module?
Are you talking about the electronic ignition module or the ignition switch? The ignition module sits in the engine compartment and is part of the ignition system (coil, spark plugs, etc). The answer is no if this about what you're referring. The answer for the ignition switch will depend on the vehicle you have. Some, like late model Fords, you don't. Push in the retaining pin and the ignition switch comes right out (you still need a key though). Others you need to take off the steering wheel to replace the switch.
Nissan D21 z24 Pickup It cranks won't start no spark getting plenty of fuel just replaced ignition module still won't start?
have you replaced and or tested both coils? are you getting no spark on the intake and the exaust sides?
1990 Jaguar XJ6 has no spark any suggestions and replaced ingnition modue and coil about a year ago. Could the ignition module purchased bought be defective Is there a way to test the ignition module?
I had the same problem with a 93 Jag. I replaced the ignition module, coil, crank sensor, and even the ECU computer and I still did not have any spark. I was stumped and studying the wiring diagram I replaced the ECM Main Relay that was the problem, it fired right up. The ECM Main Relay on the 93 is located in the passenger side of the engine compartment on the firewall and it is the farthest outboard relay. Simple fix. I sure hope this helps someone out there
Can you view wiring diagram of ignition system F 150 1987?
Hope This Help.TESTING Ignition Coil TestThe ignition coil must be diagnosed separately from the rest of the ignition system.Primary resistance is measured between the two primary (low voltage) coil terminals, with the coil connector disconnected and the ignition switch off. Primary resistance should be 0.3-1.0 ohms.On Dura Spark ignitions, the secondary resistance is measured between the BATT and high voltage (secondary) terminals of the ignition coil with the ignition OFF , and the wiring from the coil disconnected. Secondary resistance must be 8,000-11,500 ohms.If resistance tests are okay, but the coil is still suspected, test the coil on a coil tester by following the test equipment manufacturer's instructions for a standard coil. If the reading differs from the original test, check for a defective wiring harness.Ignition Coil Primary Circuit SwitchingInsert a small straight pin in the wire which runs from the coil negative (-) terminal to the TFI module, about 1 in. (25mm) from the module.WARNINGThe pin must not touch ground!Connect a 12 VDC test lamp between the straight pin and an engine ground.Crank the engine, noting the operation of the test lamp. If the test lamp flashes, proceed to the next test. If the test lamp lights but does not flash, proceed to the Wiring Harness test. If the test lamp does not light at all, proceed to the Primary Circuit Continuity test.Ignition Coil ResistanceRefer to the General Testing for an explanation of the resistance tests. Replace the ignition coil if the resistance is out of the specification range.Ignition Coil Secondary VoltageDisconnect the secondary (high voltage) coil wire from the distributor cap and install a spark tester between the coil wire and ground.Crank the engine. A good, strong spark should be noted at the spark tester. If spark is noted, but the engine will not start, check the spark plugs, spark plug wiring, and fuel system. If there is no spark at the tester: Check the ignition coil secondary wire resistance; it should be no more than 5,000 ohms per foot. Inspect the ignition coil for damage and/or carbon tracking. With the distributor cap removed, verify that the distributor shaft turns with the engine; if it does not, repair the engine as required. If the fault was not found proceed to the Ignition Coil Primary Voltage test.Ignition Coil Primary VoltageAttach the negative lead of a voltmeter to the distributor base.Turn the ignition switch ON and connect the positive voltmeter lead to the negative (-) ignition coil terminal. Note the voltage reading and turn the ignition OFF . If the voltmeter reading is less than 90 percent of the available battery voltage, inspect the wiring between the ignition module and the negative (-) coil terminal, then proceed to the Ignition Coil Supply Voltage test.Ignition Coil Supply VoltageAttach the negative lead of a voltmeter to the distributor base.Turn the ignition switch ON and connect the positive voltmeter lead to the positive (+) ignition coil terminal. Note the voltage reading then turn the ignition OFF . If the voltage reading is at least 90 percent of the battery voltage, yet the engine will still not run; first, check the ignition coil connector and terminals for corrosion, dirt, and/or damage; second, replace the ignition switch if the connectors and terminal are okay.Connect any remaining wiring.REMOVAL & INSTALLATION Carbureted EnginesDisconnect the battery ground.Disconnect the two small and one large wires from the coil.Disconnect the condenser connector from the coil, if equipped.Unbolt and remove the coil.Installation is the reverse of removal.Fuel Injected EnginesSee Figures 1, 2, 3 and 4Fig. Fig. 1: Disengage the high tension wire by pulling on the connector boot-fuel injected enginesFig. Fig. 2: Separate the wiring harness connection at the coilFig. Fig. 3: Unscrew the coil from its bracket mountFig. Fig. 4: Remove the coil from the enginePulling on the connector boot, disconnect the high tension lead at the coil.Disconnect the wiring at the ignition coil.Remove the ignition coil-to-bracket attaching screws, then remove the coil.To install:Install the coil, tightening the screws to 25-35 inch lbs. (2.8-4.0 Nm).Connect the ignition coil wiring harness and the high tension lead.
What are mechanisms employed in a spark ignition engine to vary the ignition timing depending on the speed and the load of the engine?
I don't know I'm also still searching the answer for this question.
What does cdi box do?
A CDI, or Capacitor Discharged Ignition is a system that is linked to the ignition of some petrol engine driven vehicles. Its purpose is to store an electrical charge that is discharged through the ignition coil and thus increases the power to the spark plug/s for a very powerful, high-energy spark. This prevents fouling of the spark plug/s. A CDI can be disconnected in some vehicles and the engine would still run, but with a less powerful spark to the spark plug/s.
What does a CDI box do?
A CDI, or Capacitor Discharged Ignition is a system that is linked to the ignition of some petrol engine driven vehicles. Its purpose is to store an electrical charge that is discharged through the ignition coil and thus increases the power to the spark plug/s for a very powerful, high-energy spark. This prevents fouling of the spark plug/s. A CDI can be disconnected in some vehicles and the engine would still run, but with a less powerful spark to the spark plug/s.
1993 sable why Motor turns but no spark at spark plug?
I have a 99 Sable with the OHV 3.0 liter. I have the same problem. Things I have changed so far: the engine computer or (PCM) , the crankshaft position sensor, and the ignition coil. Still have NO spark to the engine. The spark plugs don't spark. I am still waiting for more info. Let me know if you have changed something I haven't. Thanks.
91 Dakota engine turns but will not start I changed the spark plugs ignition coil distributor cap and the fuel filter. And it still will not start.?
Check to see if it getting spark/fuel Check rotor
1994 Camry new battery but still no spark?
Spark as in the ignition or spark as in not starting? Please be more specific and we will try to help you.
What would cause no spark at the spark plugs on a mercury 125 outboard?
The most likely cause would be the stator assembly. By disconnecting the cannon plug for the key switch harness, at the engine, you can isolate the problem to the engine, or the ignition switch / harness assemblies. With the harness disconnected, spin the engine over with a starter button, connected to the solenoid. If the engine now has fire, the problem is in the ignition kill circuit, (ignition switch, emergency kill switch, or harness assembly). If a no fire condition still exists, the problem is in the ignition system, on the engine itself. The stator, and related ignition components can be tested with a volt / ohm meter.
Which item is not a component of the ignition system control module starter solenoid coil spark plug?
Control Module depending on type controls the engine functions, transmission, ignition, etc. (test does not specify "Ignition Control Module")Starter solenoid would be the most likely choice because on older vehicles with points ignition, the solenoid has a Resistor (Run) post for and an Ignition (Start) post, but now we don't need resistors, but it still has to do with ignition!Coil supplies voltage to the spark plugs = ignition again.Spark plug creates the gap for the spark that the fuel needs to ignite, ignite = ignition.
You have no ignition spark on a Renault cleo 1.4rt What could have gone for there to be no spark you have bought a new coil and still no spark.?
ignition switch The TDC Sensor is probably dirty, remove it and give the tip a clean, also the connecter.
Why wont my Pontiac 6000le start i am getting spark to the spark plugs and i am getting fuel to the carburetor but my car still wont start when my car was running the check engine light stayed on?
check the ignition module, it's in or around the rotor
95 f150 and you are not getting any spark you have changed ignition mod ecm coil and distributor and still no spark?
map sensor
Why is my Geo Storm not firing at all?
Pull out a spark plug, rest it on a piece of metal under the hood, have someone crank the engine, and see if it sparks. If not, check for a spark at your ignition coil by doing the same thing. If you still have no spark, check your distributer cap and rotor, they may need replaced, or the whole distributer may need replaced. Pull out a spark plug, rest it on a piece of metal under the hood, have someone crank the engine, and see if it sparks. If not, check for a spark at your ignition coil by doing the same thing. If you still have no spark, check your distributer cap and rotor, they may need replaced, or the whole distributer may need replaced.
