Hard to diagnose over the web. Any engine codes? When was the fuel filter last changed? And was it really changed!?

 

Was this ever answered i have a similar problem to this from cold car starts I drive a few yards and then it cuts out.Starts again on the button no problem for the rest of the day no fault codes stored

 

Is this since having a new DPF fitted?


James

 

For a diesel to stop it surely has to be a fuelling issue.

 

^^ This. Water, freezing in the fuel filter?

 

Round objects.

Might be worth checking the fuel filter and glow plugs.

 

How do I check glow plugs if it happens again?

 

Noooooooooooooooooooo

150 thousand spreadsheeted fill to fill miles with multiple attempts to assess premium fuels says NOT! I have proper factual evidence!

At least for diesel.............

 

I've told you a MILLION times before not to exaggerate

 

No exaggeration at all. I genuinely do have that evidence over that mileage.

Trying it again with the Sport, again, no difference. That thing loves a drink! 25mpg so far. Mind you, it does get hoofed regularly.

 

You enjoy your McDonald's lol, my bitch enjoys only the fine dining variety

 

I'd be amazed if you DID find a difference in a brand new engine. But I've said it before, when you've got an engine with as many miles on it as mine, I'm not going to stick any old gunk through it. And whilst only anecdotal, I know, my P&J definitely DOES feel smoother and quieter with the V-Power or Ultimate fuels. I have never compared the MPG.

 

I'm with John on this. It's not about outright MPG, but keeping the engine clean - and running at optimum for its age.

Said it before - only way to conclusively prove the benefits is to run two of the same engines on the different fuels - one on Ultimate or V power, and the second on supermarket cheapo fuel. Then after say a predetermined usage - (hours on a test bench or real-life testing on a car over 2 years) - strip the engines down completely - the ancillaries too - and compare the two.


As for cars stalling - need more info - how cold was it overnight etc. Fuel in the lines between the tank and engine will be a higher viscosity. Only thing I can think of that affect the engine first thing - and only first thing.

 

As above. Start with the cheap service items first - check the state of the fuel filter. Do you know when it was last changed?

 

That's what I asked see #2, he's not been on here since Jan 13 though :-(

 

It's 2 yrs since I charged that!!!!

 

I don't think the fuel filter changes are frequent enough these days.

The amount of biodiesel allowed in UK spec diesel is massive now. Whilst it's great at cleaning the fuel lines, that crap has to go somewhere, which is the fuel filter.

My very first experience with vpower diesel was in my 70k diesel passat, which was also my first diesel. I started to get a sticky throttle response the first time I tried the vpower, which turned out to be a clogged fuel filter.

 

Both vehicles
XF 2.7 mixture of supermarket fuel and V Power or similar fuel never had a DPF warning in my ownership
XF 3.0 mixture of supermarket fuel, Shell ordinary and V Power or similar fuel never had a DPF warning in my current owner ship
Both vehicles used in France usually with the cheapest supermarket fuel a € can buy
Both vehicles average 14,000 miles/year

 

I only use high cetane diesel now, as that creates a more complete combustion, and I also add some fuel improver to boost the cetane by a couple more numbers.

My commute is only 8 miles each way, and I've had no DPF problems or warnings in my ownership of diesel DPFs.

 

I would still beat your 18 wheeler though .....

 

The maximum bio fuel allowable has been 5% for years, recently it has been allowed to be up to 7% at those levels I doubt it causes major changes. Whereas when I used 100% bio in my old Volvo, it was recommended to replace the fuel filter after the first couple of tank fills. Once changed the system was that clean never had to change the filter again.

 

3yrs 3mths used supermarket fuel with no DPF/issues per se, car ran fantastically

First(and last) derv, not an oil burner fan, so changed back to petrol 😉

'sent from my awesome Bluefire XE'

 

You know you are waiting for me, lol.

150,000 miles in two XFs and now the Sport, almost exclusive diet of supermarket fuel, (only time not was when I was assessing a premium fuel variant) never a DPF problem. Nor any other kind of fuel system problem.

 

15 yrs plus supermarket fuel never a problem

 

Nobody stated you would get problems with supermarket fuel, however, I do believe that over the long term an engine will maintain its peak performance on branded fuels.

I wouldn't die if I lived on McDonald's, but I doubt it would do me much good over time

 

Ive had an A4 put 160k on it a Passat Sport put 135k on and an Insignia SRI and put 175k on it all on supermarket fuel and never had to do anything other than general servicing of all three. And just out of interest the Insignia was actually the best car of the 3 in every way. All 3 were driven very enthusiastically!!!