Skip the auto shop - Our mechanics make house calls

Q: diesel in petrol car

asked by on

so I recently took it in to my technician, however soon after he dumped out all the gas and claims to have changed fuel pump the car takes a good 6-10 seconds to start and shakes

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

A: It may take a few of hundred miles and a co...

It may take a few of hundred miles and a couple of tanks of fuel to clear out all the diesel fuel from the fuel system and engine. The fuel pump may of been changed but there would still be left over diesel fuel in the rest of the fuel system that would need to be run through the system and out of the fuel tank.

The best thing to do is to keep filling the fuel tank every time it gets down to about 1/2 tank. Refilling it with fresh fuel will get the rest of the diesel out of the system. After a few tanks of fresh fuel then you will need to have the oil and oil filter changed, fuel filter changed and the spark plugs changed.

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: What would cause a heavy shake when the van is just about to shift under a load? Speed does not matter.

Hi there: In many cases, the symptoms you're describing can be caused by loose motor mounts, steering stabilizer bars, or other front end suspension components. If the shaking occurs during shifting of the transmission, it could be a harmonic balancer...

Q: Key not turning all the way

If you are having difficulty turning the key in the ignition switch, this may be a sign that the ignition lock cylinder, or perhaps the key, are worn and in need of replacement. This repair requires disassembling of the steering...

Q: Battery light is on

Hi, this comes up often. Your car battery light being on is an indication that your engine is not getting enough energy. This could be because of a malfunctioning alternator or a battery going bad. I suggest having a certified...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...