Q: Can I place gas back in my car after using 4 gallons of diesel?

asked by on

I made a mistake of using 4 gallons of diesel gas yesterday and my car won't start. I was wondering if I put gasoline in it would it start up ok?

My car has 35000 miles.
My car has an automatic transmission.

Hey there. Unfortunately, diesel fuel does not combust the same as regular fuel does in a gasoline engine. Eventually, the car will run out of regular fuel and die as the diesel fuel is injected into the motor. Once this happens, the system will need to be drained of all diesel fuel. This may involve draining the fuel tank and purging the fuel system which includes bleeding out the injectors and fuel rail to rid the system of the diesel fuel. If you are continuing to have problems with the car, I recommend having a certified professional, like one from YourMechanic to diagnose the no start and assist with getting your car back on the road.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. Can I place gas back in my car after using 4 gallons of diesel?

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: Not getting fuel, engine turns, but wont start, why?

The fuel cut off switch is a safety device used to cut off the power supply to the fuel pump when the vehicle is in an accident. It's related to the oil pressure, and that is not something typically messed...

Q: Should diesel engine shut off when i block air intake before filter.

Hi there. The air intake on today's modern cars are finely tuned pieces of equipment - especially on a diesel engine. If air flow is blocked or reduced in any way, it can cause the engine to have troubles maintaining...

Q: 2012 Nissan Murano codes P0011 & P0021 - any trouble shooting advise would be much appreciated!

The solenoid is mounted to the front engine cover, toward the front of the engine compartment, and above the crankshaft pulley. The two codes, P0011 and P0021 signify a fault in the variable valve timing control system. Although the engine...

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...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...