November 3, 2021
If you hear the engine crank, but the engine just won't start and run on its own, that means there's a problem in the engine itself that's preventing it from getting started.
If you hear the engine crank, but the engine just won't start and run on its own, that means there's a problem in the engine itself that's preventing it from getting started.
When your engine cranks but won't start or run, it could mean your engine is having trouble producing a spark, getting fuel, or creating compression. The most common causes are problems in the ignition (for example, a bad ignition coil) or fuel system (for example, a clogged fuel filter). However, the source may also be a mechanical fault (for example, a leaking valve) or faulty components in other systems.
Below are possible reasons as to why your vehicle is cranking but not starting
Old or Dead Ignition Switch.
This is the first symptom that you should understand if you try and start your engine but only hear the click or crank sound. When your engine doesn't start, your ignition switch could be old or even dead.
Weak or Corroded Fuel Pump.
If the fuel pump in your car goes bad, gas won't be able to flow from the tank to the engine, and it simply won't be able to run on its own. So we'll simply recommend that you have the pump replaced.
Your Vehicle's Spark Plugs Are Old and Dead.
Modern spark plugs can last 100,000 miles or more before going bad and needing to be replaced, but they can go bad earlier than that for various reasons: If the engine experiences too much carbon buildup, this can foul your spark plugs. Or, if oil leaks into the engine, it can coat the spark plugs and prevent them from working.
Frozen Or Faulty Fuel Line.
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.
Your Vehicle's Technology Is Working Against You.
When your car's technology starts to work against you. Within a vehicle, there is a computer, and depending on the year it was made, this computer can send out codes alerting you something may be wrong within your car. Each make and model will have different codes corresponding to other problems
Gas Tank is Empty
Even if your gas tank isn't showing that the tank is empty, this could still be the issue. A mis-calibrated fuel gauge can lead you to run out of gas.
FAQs
Neglected engine service is undeniably the most common cause of engine failure. Failing to perform routine maintenance, such as regular oil changes, timing belt replacement, and coolant system care, can lead to engine problems like difficulty starting, overheating, and even complete failure.
What is the number one cause of engine failure? ›
Neglected engine service is undeniably the most common cause of engine failure. Failing to perform routine maintenance, such as regular oil changes, timing belt replacement, and coolant system care, can lead to engine problems like difficulty starting, overheating, and even complete failure.
What are the three primary causes of engine trouble? ›
3 Main Causes of Engine Failure
- Detonation. One of the leading causes of engine failure is detonation. Detonation is abnormal combustion caused by excess heat and pressure in the vehicle's combustion chamber. ...
- Neglecting Oil Changes. Another common reason for engine failure is neglecting oil changes. ...
- Ignoring the Coolant.
What To do when your car engine blows
- Bring it in to a trust mechanic to see the extent of the damage. If it is worth it to fix it, pay to repair your engine.
- If your vehicle is totaled from a blown engine, research how to get the most value from it. Consider donating it or selling it.
- We've done the research for you!
In a modern vehicle checkup or tune-up, your mechanic will take a close look at the ignition system, fuel injection system and emissions system for problems that could affect performance. Parts like spark plugs, spark plug wires, oxygen sensors, vacuum hoses, fuel filters and air filters may be replaced.
What is the first indication of engine failure? ›
Inconsistently Running Engine
There is no greater warning sign of engine failure than an engine that runs inconsistently. Notice the kind of sound that your car engine makes while starting up. That should be enough to hint at an imminent engine dysfunction.
How do most engines fail? ›
Lack of lubrication: The most common cause of engine failure is dirty or low oil, which can be the result of an oil leak, faulty oil pump, the oil burning too fast, or driving too long in between oil changes.
Will car insurance cover engine failure? ›
Standard car insurance doesn't typically cover engine repairs unless they directly result from an accident or other peril covered by the insurance policy.
Can I trade-in a car with a bad engine? ›
Dealerships will allow you to trade-in your car with its blown engine. They specialize in vehicles that are roadworthy and ready to be sold.
What does it sound like when your engine is going out? ›
Some noises that a faulty engine will cause are backfiring, hissing, popping, and knocking.
If you don't have access to a manual, online resources or car experts can help you locate these parts.
- Test #1: Check the Battery. ...
- Test #2: Check the Alternator and Starter. ...
- Test #3: Check the Car Spark Plugs. ...
- Test #4: Check the Fuel Injection System. ...
- Test #5: Check the Fuel Tank Levels.
Engine Performance Warning Signs
- Check Engine Light (also known as the CEL) The first time many people notice an engine problem is when the check engine light activates on the dash. ...
- Loss of Power. ...
- Gas Mileage Drop-Off. ...
- Unfamiliar Noises. ...
- Engine Stalling. ...
- Engine Continues Running With the Ignition Off.
According to our research, Distracted driving is the number one cause of car accidents. Distracted drivers divert their attention from the road by engaging in activities such as using a cell phone, texting, eating, or multitasking while driving.
What fails in an engine first? ›
The first and most common top end engine failure is the OVERHEAT or in mechanics terms, a blown head gasket. The symptoms you'll experience with this car breakdown is constant overheating and/or a rough engine running condition.
What is the number one reason for failure? ›
Lack of persistence
More people fail not because they lack knowledge or talent but because they just quit. It's important to remember two words: persistence and resistance.
What is a common engine problem? ›
Poor compression of both fuel and air inside a car engine is a recipe for disaster. The most common reasons for poor engine combustion is due to broken valve seals, holes within cylinders and overused piston rings, forcing air to leak out. One of the easier engine faults to diagnose is leaking engine coolant.
