If there is no spark or fuel, then the first thing I would do is check the vehicle's fuses and relays, particularly the EFI main and ignition relays. It may be possible that one of these components has failed and is cutting off power to the vehicle's ignition and fuel systems.... read more ›
There are a few reasons for no spark, new coil pack could be defective, crank sensor, ignition module or bad wire in primary circuit, faulty ECM/PCM. You may have to have a good technician have a look, diagnose and estimate repair.... view details ›
If you do not see a spark, there is an ignition problem. Remove a plug wire and insert an old spark plug or a spark plug tester into the end of the wire (the plug boot). Place the spark plug on a metal surface on the engine, or ground the spark plug tester to the engine. Then crank the engine to check for a spark.... see more ›
No spark is one of the most common causes of a no-start condition. It's the first thing I check for. ... The igniter or ignition module, the pick up coil or crank sensor, the cam sensor, and the ignition switch are included.... see details ›
Loss of spark is caused by anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. This includes worn, fouled or damaged spark plugs, bad plug wires or a cracked distributor cap.... view details ›
The battery provides low voltage electricity to the ignition coil. The ignition coil converts the low voltage electricity into high voltage power in timed pulses. The distributor has a shaft that gets spun by the camshaft.... continue reading ›
The Distributor, Distributor Cap, and Rotor
That someplace takes the spark and sends it out to the spark plugs, and that someplace is the distributor. The distributor is basically a very precise spinner. As it spins, it distributes the sparks to the individual spark plugs at exactly the right time.... view details ›
As a camshaft position sensor weakens, so does the data it transmits to the ECM. Eventually the data signal becomes so weak the ECM switches off fuel and spark delivery, and your engine will not start.... read more ›
Without the crank position signal, the engine control module (ECM) can't detect where the cylinders are or how fast they're moving. If you have crankshaft sensor issues, the ECM can't synchronize fuel injection, spark ignition (for gasoline engines) or control variable valve timing.... view details ›
A blown fuse in the starter circuit could be the cause of a no-start problem. Broken or corroded wiring – Damaged or dirty wires to the battery or to the starter solenoid (or wires that are loose) can prevent sufficient power from reaching the starter.... read more ›
How to Test an Ignition Coil Pack - Best Testing Procedure - YouTube... read more ›
The ignition system is divided into two sections, the primary circuit and the secondary circuit. The low voltage primary circuit operates at battery voltage (12 to 14.5 volts) and is responsible for generating the signal to fire the spark plug at the exact right time and sending that signal to the ignition coil.... read more ›
An Issue With The Ignition Control Module
If the ignition control module has failed altogether, it'll create a weak spark, and the car won't start. Check to see if the switch and terminals are free from rust and replace any damaged or broken spark plugs wires as necessary.... view details ›
How to diagnose a No Start Condition - Ignition Switch - YouTube... see more ›
- Change Your Spark Plugs. The easiest place to start is by upgrading your spark plugs to platinum or iridium. ...
- Upgrade the Plug Wires. ...
- Timing Changes.
A bad coil or a cracked distributor cap can stop the spark plugs from firing.... continue reading ›
How to test an ignition coil/module with a test light (distributor ignition)... continue reading ›
IGNITION COIL COILS FUSE LOCATION AND REPLACEMENT ...... read more ›
Every vehicle has and requires an ignition system. The battery contains stored energy that starts your car or truck's motor. Electrical current travels from the battery to the induction coil, which raises the voltage to ignite the plugs.... continue reading ›
How To Check Ignition System In Seconds - YouTube... view details ›
The high voltage from the coil's secondary (typically 20,000 to 50,000 volts) causes a spark to form across the gap of the spark plug that in turn ignites the compressed air-fuel mixture within the engine. It is the creation of this spark which consumes the energy that was stored in the ignition coil's magnetic field.... see more ›
HOW-TO Check For Spark Plug Fire On A Small Engine - YouTube... continue reading ›
A static electric spark occurs when an object with a surplus of negative electrons comes close to another object with less negative charge – and the surplus of electrons is large enough to make the electrons “jump.” The electrons flow from where they've built up – like on you after walking across a wool rug – to the ...... continue reading ›
Re: would bad throttle position sensor cause no spark? No.... see more ›
Unfortunately, there's no way to reset a camshaft position sensor. If you're having camshaft issues (check engine light on, acceleration trouble, sputtering and stalling, etc.), you'll have to replace the part entirely.... read more ›
To reset the check engine light you can disconnect the battery via the negative battery terminal and let the vehicle sit for an hour before reconnecting the battery. This will drain all of the power from the electronics and clear any short term memory.... read more ›
The vehicle's fuses are located in two fuse boxes. The interior fuse box is underneath the steering column. The under-hood fuse box is in the engine compartment next to the battery. If something electrical in your vehicle stops working, the first thing you should check for is a blown fuse.... continue reading ›
All you have to do is connect to identify the ignition coil and the battery. Connect the positive terminal of the battery to the positive side of the ignition coil. Also, identify the starter solenoid and connect it to the positive terminal of the battery.... see details ›
Starting relay position
In most cars, it will be under the hood, in a large box with a black lid. This is where car fuses and relays are installed. It is also called a fuse box. This box is usually installed on the driver's side of the vehicle.... read more ›
- A rough idle.
- An unexplainably louder-than-usual engine.
- A noticeable lack of power.
- A significant drop in RPMs while accelerating for no apparent reason.
- A blinking or intermittently activating check engine light.
- An active gas warning light when the vehicle has plenty of gasoline.
How to check for ignition spark using screwdriver&testlight - YouTube... view details ›
The only safe way to test for spark is to use a spark plug tester tool. If a coil problem is suspected, measure the coil's primary and secondary resistance with an ohmmeter. If either is out of specifications, the coil needs to be replaced. A coil can be easily bench tested with a digital 10 megaohm impedance ohmmeter.... see details ›
Disconnect the ignition coil wire from the distributor and install the spark tester to the wire and ground the tester to the engine. Crank the engine for a few seconds. If there's spark, the problem is with the distributor cap (carbon tracks or wear) or rotor. Consult your vehicle repair manual, if necessary.... continue reading ›
No, if your engine has a bad timing belt, or timing belt slips, you could still have sparks. Timing refers to the sequence of which events are happening in an engine combustion cycle. Having bad timing can cause problems like poor engine running.... see details ›
Start with the battery. Low battery voltage may be the cause of many driveability and starting problems. ... A low battery can prevent one or more injectors from opening, which can cause lean misfire and/or hard starting.... read more ›
Answer: The most common source of trouble when the engine cranks but won't start is the ignition or fuel system. Make sure you got enough fuel pressure and good spark. Also, a faulty sensor (crankshaft position sensor or camshaft sensor on some models or throttle position sensor) may cause this problem as well.... continue reading ›
Lack of spark may occur due to a damaged ignition module, a faulty crank position sensor, a flooded engine (sometimes happens in older or high-mileage cars), bad spark plugs, or a problem in the ignition circuit, such as the wiring, security system (the fuel flow may have been shut off to prevent theft or the chip in ...... view details ›
The ECU is the brain of the operation. It uses engine RPM and signals from different sensors to meter the fuel. It does this by telling the fuel injectors when and how long to fire. The ECU often controls other functions like the fuel pump and ignition timing.... see more ›
HOW TO BYPASS BAD FUEL PUMP RELAY ON FORD RANGER ...... view details ›
- Engine runs poorly. If you've owned your vehicle for several years or have experience behind the wheel in general, you probably know what a well-running engine sounds like. ...
- Vehicle doesn't start. ...
- Overheating engine. ...
- Can't sustain speed. ...
- Decreased fuel efficiency.
Quite rarely but surely enough a bad throttle position sensor can create a no-start condition where you may be able to just crank the engine and not turn it over.... view details ›
- Ingredient one: Compression. An engine needs compression to run. A compression test is a straightforward (and usually simple) test to perform. ...
- Ingredient two: Air. Air is required to run an engine. ...
- Ingredient three: Fuel. Fuel and air sort of work hand in hand, as we just discussed.
If the car clicks when trying to start, but still won't start, this can be caused by a weak battery, dirty battery terminals, a worn starter motor or a stuck solenoid. If might just need a jump start, but there are a few tricks to try before breaking out the jumper cables or electric jump starter.... read more ›
Fuel Pump Electrical Check - Wrenchin' Up Back To Basics... see more ›
How to Properly Test and Diagnose a Bad Fuel Pump - YouTube... see more ›
Some possible causes for this issue may be a blown EFI (Electronic Fuel Injection) main or computer fuse, a defective ignition module, a wiring issue, or perhaps even a defective engine control unit.... read more ›
The amount of fuel injected is controlled by a flap valve located in the engine's air intake. The flap sits beneath the control unit and rises and falls in response to airflow - as you open the throttle, the 'suck' from the cylinders increases the airflow and the flap rises.... read more ›
Fundamentally, the engine ECU controls the injection of the fuel and, in petrol engines, the timing of the spark to ignite it. It determines the position of the engine's internals using a Crankshaft Position Sensor so that the injectors and ignition system are activated at precisely the correct time.... view details ›
The fuel pump relay sends a current to the electric fuel pump. A fuel pump relay is an electrical device much like an automotive fuse. It directs current to the electric fuel pump and ensures that the part receives enough power to operate properly, but not too much as to damage it.... see details ›
Does fuel pump need relay? Yes, fuel pumps need a relay because it prevents your ignition switch from overheating. The run circuit (which the pump would traverse) was designed for a limited number of amps to transit through the contacts.... see details ›
How to: Temporary in-line fuel pump fix to get you back on the road... see more ›