When checking for no spark, bear in mind that most times it is caused by dirt or corrosion on the contact surface of the ignition points. Ignition coils rarely fail, and if a condenser is bad you will get a tit built up on one of the point contacts and a pit on the other.
Full Answer
What happens if there is no spark in the ignition?
No spark indicates an ignition problem. In extreme cases the (PCM) may have failed. In some cases, a (PCM) problem, will cause the vehicle not to run at all. The (PCM’s) functions include; positioning the crankshaft and controlling the ignition spark and timing.
How to check for spark from coil points?
If you have 12v there, then manually open the points and check for spark from the coil. If no spark, remove the wire from the points and manually "spark" it to ground.
What to do when there is no spark?
First check for power to the coil. If you have 12v there, then manually open the points and check for spark from the coil. If no spark, remove the wire from the points and manually "spark" it to ground. If spark, then problem is bad points or condensor. If no spark, then the problem is coil or the wire to the points.
Can a bad ECU cause no spark?
Bad grounds can cause no spark issues though. It can cause the ground to ground through the ecu frying it. If you get a single spark when turning on the ignition then nothing when cranking it's the ecu.
Can points cause no spark?
What can cause a no spark issue?
What happens when ignition points go bad?
Can a bad ground cause no spark?
Why am I not getting spark from my coil?
What causes a cylinder not to fire?
What are signs of bad points?
- Vehicle not starting. If your vehicle will not start, it is possible there is a problem somewhere within the points and condenser. ...
- Engine will not fire. ...
- Engine runs rough.
How do I know if my points are working?
Can a bad condenser cause weak spark?
Can bad ignition switch cause no spark?
Why does my engine turn over but not start?
If the car cranks when you turn the key, but the engine won't start, it could be because fuel isn't getting to the engine. One potential reason for this could be dirty fuel injectors. Over time, the fuel injector nozzles can become clogged with rust, corrosion or debris.
Can weak spark cause no start?
SOLVED: Spark at points, but not at plug - Fixya
The coil for the #1/4 spark plugs is mounted on the left side of the bike, and has the solid orange (ground) wire and the red-with-white-tracer-stripe (hot) wire input leading to it. The coil for the #2/3 spark plugs is mounted on the right side of the bike, and has the solid grey (ground) wire and the red-with-white-tracer-stripe (hot) wire input leading to it.
Top 5 Reasons Behind No Spark from Distributor
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Ignition Coil No Spark. Replace Contact Breaker? - iFixit
@ahughes05 if you are 100% sure you have no power reaching the spark plugs you need to check the wiring to the coil, the distributor cap, carbon brush and the rotor arm. That is probably what you are referring to when you say " contact breaker". If all that checks out normal the fault is probable with one of the system sensors.
signs of a failing condenser? | Tractor Forum
If you have a failing condenser, you could have hard starting issues and you could start burning the points. You engine will probably not run as smoothly once you do get it started.... if it will start at all.
Why won't my car start?
Vehicle not starting. If your vehicle will not start, it is possible there is a problem somewhere within the points and condenser. The ignition system can be a complicated system, especially to someone who has never worked with them before, so it is best to contact professional mechanic to diagnose and repair the problem.
What happens if your car runs rough?
If your vehicle runs rough, the engine will not fire, or the vehicle will not start at all, the points and condenser system may be failing. by Spencer Clayton on January 11, 2016. 1.
Why is my engine running rough?
Engine runs rough. A failing points and condenser system can cause rough running, misfires, lean and rich conditions. If the engine is difficult to start, and runs rough once it does start, then it is time to contact a mechanic to have a look at the system and find out exactly what the problem is.
Can a point and condenser be replaced?
From there, the mechanics can replace the points and condenser system if needed, so you can have your vehicle up and running in no time. 2. Engine will not fire. When you try starting your vehicle, if the engine turns over but does not catch, this is a potential points and condenser problem. It is a good idea to check the battery ...
Why won't my car start with no spark?
No spark is one of the most common reasons why your engine will not start. When taking on a no spark condition one needs to be patient and have an open mind. Becoming fixated on specific components is a good way to not find the true problem. It’s far more likely that there is a problem with a wire, connector, ground, ...
How to check if a spark plug is working?
First, Confirm Your Engine Has No Spark: 1 Disable the fuel system by removing the fuel pump fuse or relay. 2 Insert a spark plug tester into the plug boot and ground it on a piece of metal on the engine. 3 Finally, Have someone crank the engine and watch for spark.
How to tell if ignition coil is bad?
One of the most common symptoms of a faulty ignition coil is when the vehicle runs for a while and then the car’s engine suddenly dies for no apparent reason. As a result, This occurs after the ignition coil or module gets too hot. Furthermore, it could correct itself after the engine module cools. In some cases, a bad ignition coil will result in the vehicle not starting it all.
How to tell if ASD relay is bad?
A Bad ASD Relay. One of the most common symptoms of a bad ASD relay is an engine that will start, but stall out almost immediately, or at random times. The ASD relay supplies power to the vehicle’s ignition coils and fuel injectors, which are some of the most important components of the entire engine management system.
How to test spark plugs on a car?
Insert a spark plug tester into the plug boot and ground it on a piece of metal on the engine.
Is a distributor cap suspect?
Often the distributor cap is suspect. The internal and external surface of the cap should be clean. No erosion should be on the surface and the firing points should be free of rust or corrosion. Also, Confirm the rotor is in good working order.
Can a bad ignition coil cause a car to not start?
Furthermore, it could correct itself after the engine module cools. In some cases, a bad ignition coil will result in the vehicle not starting it all.
How do points work in ignition?
Also, how do Points work ignition? When the points are touching each other electricity runs from the battery, through the coil and to the engine block, which is grounded to the negative terminal on the battery. The current running through the windings in the ignition coil builds up a powerful electrical field that is unleashed when the points separate.
What happens when the points of a battery touch each other?
When the points are touching each other electricity runs from the battery, through the coil and to the engine block, which is grounded to the negative terminal on the battery. The current running through the windings in the ignition coil builds up a powerful electrical field that is unleashed when the points separate.
Why is my engine running rough?
Engine runs rough A failing points and condenser system can cause rough running, misfires, lean and rich conditions. If the engine is difficult to start, and runs rough once it does start, then it is time to contact a mechanic to have a look at the system and find out exactly what the problem is.
1. How to Do a Quick Ignition System Check
If you have noticed a mild problem with misfires or a no-start condition, but the engine still cranks, this quick test (for vehicles with a crankshaft position sensor) can lead you to the source of the problem:
2. How to Check for Spark, Voltage Leaks and Resistance
Diagnosing spark, leaks and resistance are common tests you can do when dealing with ignition system problems. These tests are closely linked to ignition system basic maintenance procedures.
2.2 Diagnosing Voltage Leaks and Resistance
Spark plug wires wear out after years of operating under extreme temperatures (hot, cold), engine vibration, and contamination from oil, grease and coolant.
2.3 Alternative Test for Plug Wire Leaks
Connect a test light to a metal bracket, engine bolt, or battery ground (the one marked with the "-" sign).
3. How to Interpret Diagnostic Trouble Codes
One of the first checks you want to do early in your diagnostic procedure is to download potential trouble codes (DTCs) from your computer memory. You want to do this whether the check engine light (CEL) is on or not. Often, a pending code can give you a clue to the problem.
4. How To Read Spark Plugs
Removing and inspecting spark plugs can give important clues about what type of problem, if any, is affecting your engine and what to do about it.
5. How to Deal With a Weak Spark
Dealing with a weak spark in one cylinder is usually not too difficult to diagnose. However, a random weak spark that results in random misfires is another story.
What to do if you don't have spark?
If you find you don’t have spark, the next step is to determine if the problem is in the primary or secondary side of the ignition system. The primary side of the ignition system includes all the stuff before the ignition coil. This includes the igniter or ignition module, the pick up coil or crank sensor, the cam sensor, and the ignition switch itself. This varies greatly by manufacturer, so you’ll have to do a little homework to see how your ignition system is supposed to work, as well as how to go about testing it. The short of it is that the primary side of the ignition system tells the ignition coil when to fire. If it’s not told when to fire or it has a weak signal, then the coil won’t work right and you won’t have spark.
Why is my car no start?
Another common cause of a no-start condition is no spark, or no ignition. It’s the first thing I check for with a crank/no start condition. No-spark conditions can have a number of causes, but for starters, we need to know if we have spark when we crank the engine. As shown in the Crank/No Start video, you can easily check for spark ...
What happens if the ignition coil is not told when to fire?
If it’s not told when to fire or it has a weak signal, then the coil won’t work right and you won’t have spark. Tools.
What to do if playback doesn't begin?
If playback doesn't begin shortly, try restarting your device.
What to replace if no start?
I’ll go out on a limb here and say that if you have a problem with the secondary side of the ignition system causing your no-start, just replace everything: the distributor cap, ignition rotor, wires (HT leads, depending where you’re from), and plugs. These are maintenance items anyway so replacing them really can’t hurt.
How to test for spark in a car?
Test for spark by touching the spark plug to the engine and pushing the starter.
How to remove spark plug cap and wire?
Remove your spark plug cap and wire from the spark plug by pulling it free. Using a glove to prevent a shock, touch and hold the threaded metal part of the spark plug against your engine (or any bare metal) to short the plug. Stay away from the fuel lines because FIRE…
How many Ohms should a motorcycle spark plug cap be?
The reading should be anywhere between 5 000 and 15 000 Ohms. If the spark plug cap is still on, it will add resistance of between 5 000 and 10 000 Ohms.
Why won't my motorcycle start?
Having no spark at the spark plugs is one of the most common reasons why a motorcycle won’t start. A no spark condition can also be one of the most frustrating starting issues on a bike. But there’s no reason why you can’t get it running again.
Can a bike spark if it has more than one cylinder?
NOTE: If your bike has more than one cylinder, it may still fire if only one cylinder has no spark. But in the original spark test, you’d have to test all the plugs. If none has spark, the whole ignition system is not getting power. If only one spark plug is dead, the problem has to be closer to the plug.
What is the point gap on a plug?
Point gap should be about 0.016". 0.030" was the plug gap. If you have a dwell meter, the dwell should be 30°
How to check if a carb sprays gas?
Open the choke, peer down into the openin with a flashlight, operate the throttle linkage manually, and see if it sprays gas. You’'re probably going to end up rebuilding the carb and perhaps even draining and refilling the gas tank.
Is there a spark in a condenser?
Ok to answer your question, yes there is normally a small spark. Ideally the condenser would prevent this, and it does greatly reduce it, but typically there is a small spark.
Can you see a spark at a contact point?
A spark at the contact points might possibly be seen but not seeing a spark does not indicate a lack of current. The voltage at the points is minimal compared to the coil output.
