Incorrect fuel in your Alfa Romeo 164? Diesel in your Petrol Alfa Romeo?

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Alfa Romeo Fuel Drain


Filling Diesel in a Petrol Alfa Romeo is a very common error. And exactly what you should do about it depends on a few factors. Assuming you want to know what to do to fix it then stay with me.
Listed below are the main variables to be aware of whenever deciding on whether or not to have a fuel drain:

  1. How much Diesel have you put in to the Alfa Romeo, bearing in mind that the fuel tank capacity of the Alfa Romeo 164 is usually about 70 litres?
    1. A small amount of Diesel, something like 3.5 litres of Diesel in a Petrol 164 will typically not really be a big problem. Experience has shown us that anything less than 3.5 litres (5% of the overall fuel tank capacity) is quite often capable of being sufficiently diluted by means of thoroughly filling up the tank with the right fuel.
      It's rather uncommon to find a motor vehicle having problems with lower than 5% wrong fuel contamination. Keep in mind that it is uncommon - certainly not impossible to encounter. You can get a few vehicles that don't stand any level of contamination whatsoever.
    2. Somewhere between 3.5 and 7 litres of Diesel in the Alfa Romeo (5 to 10%) is a 50/50 situation. Our practical experience demonstrates that as many people get away with it as those people who don't. When deciding on whether or not to chance it and just fill it up bear in mind that it is the same as betting it all on black - you have a 50/50 chance of it working.
    3. Anything in excess of 7 litres of Diesel in your Petrol 164 ought to straight away be removed seeing as your likelihood of driving with this amount of contamination is probably less than one in 50 - extremely huge odds.
  2. Put Diesel in a Petrol Alfa Romeo and drove it: Have you noted any performance issues ever since putting the incorrect fuel in your 164? In that case, get it drained no matter the quantity of Diesel or the contamination percentage. Proceeding to run running a vehicle that is already beginning to suffer from the effect of fuel contamination can typically result in even more damage being caused to your fuel system.
  3. Are you looking for reassurance?
    Then get it emptied. Regardless of the contamination ratio, there is inevitably a certain level of threat resulting from operating a Petrol motor on Petrol contaminated with Diesel. Possible consequences of driving a vehicle on the wrong fuel include things like the engine refusing to start, running lumpy, reduced power, degradation of the high-pressure pump, damaged or bunged injectors, and the like. These are some of the most common Diesel in Petrol symptoms, and in the event that you detect any of them then stop driving and have it removed asap.

Avoid having any unqualified mechanic to attend your automobile. We are Alfa Romeo specialists and hold the certification and expertise needed to make sure that you are back on the road with no hassle or trouble.

Put Diesel in a Petrol Alfa Romeo

Mistakenly put Diesel in a Petrol Alfa Romeo? Or possibly even put contaminated fuel in your Alfa Romeo 164?

Call us for Assistance & Advice

Contact us and obtain honest advice and practical help for your specific circumstances

We arrive and do the fuel drain

We can come to you to do the complete contaminated fuel drain & purge there on scene

Once performed You Get Going Again

When we have completed you will be able to get back moving and get on with your day

Wrong Fuel Drain Specialists

We are the leading wrong fuel drain professionals in the UK, boasting national coverage, for Alfa Romeo motorists particularly. We primarily fix:

  • Unleaded petrol in your Diesel Vehicle
  • Diesel in your Unleaded Petrol Car
  • AdBlue fuel contamination
  • Water fuel contamination

We are Alfa Romeo specialists and have successfully drained thousands of Petrol Alfa Romeo vehicles. Regardless of whether it's at the roadside, on a station forecourt, or even at home, we are able to get you going once again.

The Procedure

The system of getting rid of Diesel from a Petrol vehicle is fundamentally exactly the same for a large number of motor vehicles. Naturally it does vary slightly as each manufacturer has their unique different fuel system. Having said that it still basically follows the following principles:

Petrol in Diesel Alfa Romeo

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain Alfa Romeo

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain Alfa Romeo

Vehicle Restart

Get the car up and running again

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Diesel in Petrol Questions

When someone has put Diesel in a Petrol car they have a few very common questions. So we have compiled a list of the most Frequently Asked Questions for you

I put Diesel in a Petrol car and drove it. What do I do?


Turn off the car as soon as possible and call us. Continuing to run a vehicle on the wrong fuel can potentially damage it. We will be able to give you advice and assistance based on your circumstances

Will driving a Petrol car on Diesel cause damage to it?


It can. However, if the problem is caught and remedied quickly the risks will be minimal. Of the 1,500 vehicles we attend every month, less than 0.5% have suffered and substantial damage requiring parts replacement.

How much Diesel can I get away with in a Petrol car?


The safe answer is none. However you might be able to get away with a very low contamination ratio. That being said, we always highly recommend draining anything over a 5% contamination ratio asap.

I know about petrol in diesel, but what about Super Unleaded?


Putting Super Unleaded, or Shell V-Power, BP Ultimate Unleaded, etc, will have the exact same effect as putting regular unleaded petrol in your diesel car and will need to be drained out and flushed.

Will getting you to do a fuel drain void my warranty?


No! The EU Block Exemption Regulations clearly state that "the work can be carried out by as long as that garage uses manufacturer approved parts and correctly follows the manufacturer's service schedule."

Can I top it up with Petrol and add some 2-stroke oil?


This might work on some vehicles in some cases, but in the majority on instances it won't and you risk damaging the Lambda sensors as well as fuel pump and injectors, just as a regular misfuel.

Get in Touch

In case you have any queries or require some help please Contact Us!
We are able to get you going again.

24/7 Alfa Romeo Helpline

0333 366 0103

Our Business Office

Fuel Fixer Ltd, Linx House, 147 London Road, East Grinstead, RH19 1ET

Weekdays: 9am to 5pm

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