Skip the auto shop - Our mechanics make house calls

Q: Getting too much gas and it's flooding out through the cylinder

asked by on

Gas is coming out tailpipe it is hard to start and won't hardly run. It has new injectors, new crank sensor, new timing sender, new oxygen sensors, new IAC control valve

My car has 40000 miles.
My car has an automatic transmission.

Hi and thanks for contacting YourMechanic. If fuel is coming out of the exhaust pipe, then the fuel is not being burnt. Check the spark plugs and wires to make sure that they are not burned. If the spark plugs are soaked in fuel, then either the spark plug is not working or the fuel injection system is flooding the cylinders. If the injectors were replaced, then I am suggesting that the ignition is not working. If the ignition is working, then there could be an issue with the compression, a burned exhaust valve or rings issue. If you need further assistance troubleshooting your vehicle, then seek out a professional, such as one from YourMechanic, to help diagnose the fuel leak and guide you through repairs.

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: Stalls while applying throttle. Already changed two warm up regulators

Hello. I think you may have a problem with the cold start valve not dumping the proper amount of fuel to allow the car to start and remain running on a cold start. The distributor should be checked as well...

Q: Ford F-150 stalling out

The most common issues I've experienced on these trucks are vacuum leaks. Either the pcv hose that connects into the back of the throttle body will develop a hole, or the hoses that run from the exhaust manifold to the...

Q: Fuel leaking from vehicle

If you have a fuel leak, you should have the car checked-out by a technician to determine where the leak is coming from. Leaking fuel can be very dangerous, and should be addressed as soon as possible. If the fuel...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...