Skip the auto shop - Our mechanics make house calls

Q: 2010 Mazda 3 start issues

asked by on

The car will crank but takes a while to start. Sometimes it will start, sputter then die. Once started it runs great without issues. No check engine lights are on. Also, once we get it started the first time, if we turn it off and back on it'll start right back up without issue. My assumption at the moment is tune up or fuel pump from my knowledge and prior reading. Any thoughts?

My car has 117000 miles.
My car has an automatic transmission.

There are many causes of hard starting but illustrative ones are a faulty engine coolant temperature switch (sensor), malfunctioning idle air control (IAC) valve, vacuum and EGR leaks, inadequate fuel delivery or pressure (clogged fuel filter, injectors), and contaminated or old gasoline. If you can start the vehicle readily when cold by holding the accelerator pedal to the floor while cranking, suspect an air induction fault such as a stuck IAC valve. To resolve the issue that you are writing in about, please request a hard start diagnostic and the responding certified mechanic will get this resolved for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Front end noise

Hello, thank you for writing in. The first thing to do is isolate where and when it happens. If you hear it going over bumps or cracks in the road, you need to look into your suspension. If it only...

Q: Horn only works intermittently

Hey there. It sounds like the horn switch is on it's way out if you are having an intermittent issue. Another way to tell would be to see if the horn sounds with the panic button on the key fob....

Q: my temperature gauge went very high..

A lot of components come into play when it comes to maintaining vehicle engine temperature. A ruptured coolant hose may of been symptom to a greater problem. A failing water pump or a thermostat that is stuck closed are a...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...