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With Ignition coil and resister new and still have weak spark and engine wont start?
If it's a HEI system you probably have some kind of problem with the control module. If it's an older engine using points I'd look first at the points and condenser.
The resistor is only used when the engine is running. The starter shunts full voltage to the coil during startup to provide a little extra spark. In effect the starter bypasses the resistor for you, or at least that's the plan. Verify that the starter is doing that before you spend too much effort on anything else.
What else can I help you with?
What are symptoms of a bad ignition coil?
A bad ignition coil will cause your engine not to have any spark. Without any spark the engine cannot start or run.
Can ignition coil cause an engine to not start?
Yes, a faulty ignition coil can prevent an engine from starting. The ignition coil is responsible for converting battery voltage into the high voltage needed to create a spark at the spark plugs. If the coil is malfunctioning, it may not produce the necessary spark, leading to misfires or a complete failure to start the engine. Other components may also contribute to starting issues, but a defective ignition coil is a common culprit.
What do you do when you turn the ignition key on to start on a 1984 Mercury Capri 5.0 but it does not stay running when the ignition is brought back to the run position?
replace the balist resister replace the balist resister
Could you inform me about ignition coils?
An ignition coil is an coil that is used to change the volts in a battery to ignite the spark in the spark plug. This is necessary to get the engine to start up and the car to run.
Why will the engine turn over but not start in a 1996 Ford Taurus?
Common reasons for a 1996 Ford Taurus engine that turns over won't start are a faulty compressor or ignition. The engine may not be able to compress the air/gas mixture well enough for it to burn when the spark fires or the ignition may be unable to produce the spark required to start the combustion process.
Why does the car start but not run?
In answering the question, "Why does a car start, but not run?", I have no information on year or make. If the car has a 12 volt system and is a pre-computer model, a likely answer would be due to a faulty ballast resister in the ignition system. The ballast resister is wired to the positive side of the ignition coil. When the engine is cranking, full battery voltage is applied to the coil primary winding to provide the hottest possible spark for the plugs. Once the engine begins to run, voltage is applied to the ballast side of the resistor, reducing applied voltage to the primary circuit, thus prolonging life of coil and distributor points. This explains why the engine will start but cut off as soon as the key is returned to the run position. To prove the diagnosis, a simple trick is to run a small jumper wire from the positive terminal of the battery to the plus side of the ignition coil. If the engine starts and continues to run, the ballast resister needs to be replaced.
What if your engine cranks but won't start what should you do?
check for spark at plugs,coil.check you are getting fuel check ignition condensor
How does a diesel engine start?
A diesel engine has no spark plugs. Because the air is so compressed and hot at the top of the stroke, the fuel ignites right away when it is injected. This is why a diesel engine is called a "Compression Ignition" engine and gasoline engines are called "Spark Ignition" engine. This also means that there are no ignition breakers, ignition coils, distributors and ignition wires to go bad. This allows diesel engines to start no matter if it is dry or rainy and wet. The immense compression creates the heat that ignites the fuel. On cold days a glow plug may be necessary to heat the combustion chamber enough to start the engine.
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
How test ignition system on a robin engine model eh29c?
To test the ignition system on a Robin engine model EH29C, start by checking the spark plug for wear or damage and ensure it is properly gapped. Next, disconnect the spark plug wire, ground it to the engine, and pull the starter cord to see if a spark is generated. If there's no spark, inspect the ignition coil and wiring for any faults or damage. Additionally, ensure the kill switch is in the "run" position, as a faulty switch can prevent the ignition from functioning.
Why does a 2.2LSunfire not start after the engine is hot?
the two most common no start when hot causes are fuel pump in your fuel tank and loss of spark ignition module
1993 Grand Am engine cranks but does not start No spark No power to instrument panel gauges when key is in the on position?
ignition starter switch
