Skip the auto shop - Our mechanics make house calls

Q: My car seems like it's flooding when you start it even though it's fuel injected? Why would this be?

asked by on

My car seems like it's flooding when you start it even though it's fuel injected? Why would this be? When you try to start the car when the engine is warm it floods and is very difficult to start

My car has 240000 miles.
My car has an automatic transmission.

Hi there, thanks for writing in.

The amount of fuel injected into your engine is controlled by the PCM, with several inputs from various sensors on the engine. One of the most important inputs is the coolant temperature sensor, and if that was giving a false reading, say cold all the time, then it would be fine on cold starts but would inject to much fuel on hot starts, giving the appearance of being flooded. You should have the PCM scanned for faults and the coolant temperature sensor tested by a qualified technician, such as one from YourMechanic, who can diagnose the hard start for 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!
  1. Home
  2. Questions
  3. My car seems like it's flooding when you start it even though it's fuel injected? Why would this be?

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: My car is making a grinding noise. Could it be the harmonic balancer?

The harmonic balance does not have a bearing in it. There are various tensioner pulleys in your serpentine belt system that do have bearings in them that can cause this type of grinding sound when they are worn out. ...

Q: Why does my truck run rough after leveling it out 2003 GMC Sierra 2500HD

Hello. You should not need to turn the torsion bars all of the way up to level the vehicle out. This will make the vehicle ride rough and it will put excessive strain on the torsion bars which can cause...

Q: Truck won't start

Hi There, Depending on whether or not the vehicle will turn over will determine what the next step should be. If the engine does not turn over, I would recommend checking all connections related to the battery and check to...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...