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.

A: Hi and thanks for contacting YourMechanic. ...

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・Save up to 30%

Get a quote

What others are asking

Q: Car won't start after sitting for 14 months

Hi there. Check the fuel pump to see if it is energizing, and check the fuel pump relay to see if it is clicking when you turn on the key. If the relay is not clicking, then remove the relay...

Q: Car making rattling noise

Hi. I will assume you have had your passenger side hub bearing replaced. On an all or four wheel drive Envoy's, there is also a drive axle up front that applies power to the front wheels. This only applies in...

Q: Air conditioning in back of van doesn't work

The AC system could be low on refrigerant. Vans that have rear AC hold much more than a standard system. There are however, many more possibilities. Restrictions in the lines and blend door issues could cause this as well. I...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...