Skip the auto shop - Our mechanics make house calls

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.

A: Hey there. Unfortunately, diesel fuel does ...

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 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

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: Truck not starting - 2002 Chevy Trailblazer

Hello there. There are many faults that can cause your 2002 Chevrolet Trailblazer to crank but not start. The most common causes of a no start condition is the battery, starter, battery cables, ignition switch, fuel pump, wiring harness fault,...

Q: Diesel in the gas tank

Hello, the only repair that can be made is to drain the fuel tank, flush the fuel lines, flush the fuel rail, and replace the fuel filter. The fuel tank once drained, can be removed and then the fuel pump...

Q: What has stopped working cvc axle or transmission

The popping noise on turning is typical of failed outboard CV axle joints. It is possible the joints did finally break, thus accounting for the lack of movement. If you jack up the front wheel (just one side at a...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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 P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...