Why does my car sputter when I first start it?
Bad or Dirty Spark Plugs: Spark plugs are responsible for igniting the fuel in the combustion chamber. If they are not working correctly or are dirty they don’t ignite the fuel cleanly and the car can misfire or sputter. Vacuum Leak: A leak in the vacuum system can lead to a sputtering or rough running engine.
Why does my car stutter when cranking?
Hi there – if your car stutter-starts, but runs fine once it is running, you probably have a problem with the fuel system check valve. A malfunctioning check valve requires the fuel pump to run longer to build adequate pressure for the engine to run, resulting in longer cranking time, and stuttering as you describe.
Why does my car sputter on cold start?
Beyond the MAF sensor, in most cases, an engine that stumbles when it’s cold is caused by one of three different components: clogged fuel injectors, a dirty throttle body, or an EGR valve that is damaged or also dirty and needs to be cleaned.
Why does my car sputter when I drive?
Driving should be smooth. But, if you are driving and your car’s engine starts sputtering the first cause of concern would be low fuel. However, if your fuel gauge is full it could be a symptom of further engine problems. A blocked fuel injector can prevent fuel from reaching the combustion chambers.
What does it mean when your lawn mower engine is sputtering?
Sputtering of the engine while mowing is often an indication of bad mower maintenance, not a fault with the machine. Most repairs to stop sputter are cheap and part of your regular mower maintenance. A sputtering lawnmower may need cleaning.
What does it mean when your car engine is spluttering?
A spluttering engine is a cause of concern for many motorists. It could mean that your fuel injectors are clogged and are no longer supplying the right amount of fuel. If the catalytic converter is faulty, harmful gases can find their way to the atmosphere. Some of these gases, like sulfur, are identified by their strong egg smell.
What causes car engine to hesitate when accelerating?
The exhaust gas recirculation valve, or EGR valve, may be damaged and causing a leak. This is known to cause engine hesitation problems, so it should be addressed. If you are using bad fuel which is has been sitting in your tank for too long or is too low of an octane for your engine, it can cause many different problems.