First of all I would like to say thanks in advance to anyone on this forum who writes back and provides me with any help or advice at all….. Please help me I have been getting 2-3 hours sleep max. for the last few days!!! This is worrying the crap out of me!!

Okay here is what happened.. I was driving my parents Mercedes Benz (2008 Model C220 CDI – Diesel Engine)… the tank was on reserve fuel… I accidently filled it up with just under 10 litres of petrol. Immediately I realised what I had done… so I asked the guy that works at the petrol station what I need to do… and he said it shouldn’t be a problem… just move your car to the side and take it to a mechanic so it can all get flushed out. There was a guy beeping his horn to use the diesel pump behind me… so I started the car for under a minute and just moved the car 5 metres forward so that the guy behind me could use the pump. (AFTER THIS HAD HAPPENED I DID NOT START THE CAR AGAIN.. I GOT IT TOWED DIRECTLY TO MERCEDES)

I then got it towed to Mercedes… when I went to Mercedes the service guy told me straight up front if the ignition has been turned on or the car has been started in any way… they would need to do a completely different type of service which was going to cost approx. £7,000 pound. Otherwise if the car hadn’t been started they would just flush the fuel tank & the lines and it would just cost me under a £650 pounds. I panicked at that point because I don’t have anywhere near £7,000 pounds… im just a 22 year old kid earning under 9 pounds an hour… so I just told them that the car had not been started at all.... i thought they might have been lying to me... and just wanted to rip me off… when they told me that it was going to cost 7,000 pounds to repair... just for simply turning the ignition on

Anyway they did the service… and this is what the invoice says they did;
FUEL TANK & LINES
2 X SEAL RINGS
REFILLED ENTIRE TANK WITH GAS

They have told me specifically that they did NOT do any of the following;
*Change the fuel filter
*Flushed the injector lines
*Checked the injectors & checked for any back leakage

This was all done 4 days ago… yesterday I was driving the car and I noticed that when taking off at the traffic lights…. If I pushed the accelerator slowly the car would just lag and eventually take off just fine.. however if I pushed the accelerator down a little faster the car would start to shake almost like a manual and the engine would stall/cut-off completley

The car has never had the problem before… so I can almost guarantee that it has something to do with the petrol incident and is linked to it. Anyway I have taken it back to Mercedes who have hooked it up to their computers and tested it all… and taken it for a test drive… They are telling me that they cannot find any faults with the car at all!!! (THEY HAVE NO IDEA YET THAT THE CAR WAS INITIALLY STARTED)

I don’t understand much about cars… but I am really afraid that petrol has gotten into the engine/injectors/fuel-pump/fuel-filter or whatever the case may be (like I said I don’t know much about cars)…. And can cause major damage if I continue to drive it!!! I just cant understand how much petrol could get into the engine if the car was just started and literally moved like a couple of metres…. Surely there is existing diesel fuel in the lines… (But I have been reading up … and apparently the new Mercedes have an extremely high pressure pump)…

The car has been driven approximately 200kms since it has been flushed and the incident occurred..

PLEASE can anyone give me any further advice on what I should do??? Or what you would do if you were in my same position… please… I have spoken to a few mechanics and they have told me that if petrol has got into the fuel pump etc… it would slowly begin to wreck other components and the long-term damage would be over £16,000 - £17,000 pounds!!!! I do not want to keep driving it if this is the case…. Is there anyone that I can take the car to that can check to see if petrol has got inside or is still inside the certain components of the car????

What do you think needs to be done to the car now?? Change the fuel filter & do a “back leakage check” on the injectors??? Somebody was saying that I can get a fuel sample report of some sort??? I have no idea what that means?

Thanks guys

I would probably get the fuel filter changed (depending on the amount of miles on the car it may have knocked a bunch of crap loose and plugged the filter)- then give it a good overdose of fuel treatment and drive the crap out of it.

The dealer(who knows your car better than any one) and a few mechanics have all told you the same thing, how much more info do you need. No offence to any one on here but you will get a lot of bad advice. Just my 0.02 cents worth (or in your case pence).

change the filter....