hello everyone, just joined and i have been reading all the articles about skoda's running on vegetable oil all over the net so i tried.

well yesterday i put 50 % diesel and 50% veg oil in my 2001 skoda octavia 1.9tdi.

it travelled 250 metres and packed up, now my car is in the garage.

can anyone help

How cold is it where you are?.

Oh dear,

welcome to the forum,sorry i cannot help.

hello everyone, just joined and i have been reading all the articles about skoda's running on vegetable oil all over the net so i tried.

well yesterday i put 50 % diesel and 50% veg oil in my 2001 skoda octavia 1.9tdi.

it travelled 250 metres and packed up, now my car is in the garage.

can anyone help

I think you will find that's not the way to do it with modern diesel engines.........you should really have consulted here first......DieselVeg Home - Diesel to Vegetable Oil engine conversions

Sorry to hear the initial results and hope you can fix soon...

If its a PD engine which I suspect, you should run ZERO % veg oil. The injectors simply cannot handle the thicker "oil" when it comes to the thousands and thousands of PSI they inject fuel at!

It's a real shame you didn't come on here first and query it. No veg will ever touch my fuel tank, and I'm even reluctant to try biodiesel, even though it should be the same as diesel, essentially....

Sorry to hear about your dead car and sorry I can't help.

...skoda's running on vegetable oil all over the net...

The operative words here are "running.. all over the net" - unfortunately as you have discovered, they won't run on the road.

As you have also discovered to your cost, "the net" can be the greatest source of DIS-information ever inflicted on the human race.

I think your only hope of reviving your car is to have it towed to a main-dealer or VAG specialist for (probably expensive) repairs. Please don't try re-starting or driving it.

Hopefully it has stopped before any serious damage was done.

Drain tank and get rid of it. Flush out fuel lines, remove fuel filter and change it. The worrying thing is going to be anything that's happened to the injectors. They are very expensive new, but can be had for £200ish from scrapyards. I will have a set of pd130 stock injectors for sale soon, but unless you were planning some tuning, they're not worth using.

sorry mate but you Can't run veg oil in the VW common rail 1.9 direct injection.. [or pd] the spray pattern on these is too critical. Veg oil knackers up the flame front progression .. Apart from the burning characteristics , being more viscous, it has a great cleaning affect on the fuel tank and lines and has a tendency to suck all the crap from the tank and the lines into the fuel filter. not to mention gumming up piston rings..

I run 50:50 veg/dino diesel in winter and 70:30 veg/dino in summer in my Paj with an indirect injection diesel with heated fuel filter.. It runs great and is actually smoother and quieter than on dino. .albeit smelling like a doughnut van..small price to pay for 70p litre for veg oil

but I would never let it near my octy.. I wouldn't even try it with bio-diesel.

IMHO better to leave veg oil for indirect injection diesels

I would imagine that on 2001 plate your 1.9 is a common rail rather than a pd . If so, drain your tank, re-fill with dino, change the fuel filter and prime it with dino diesel and a small amount of redex diesel [or other cetane booster] and crank it and cross your fingers..the common rail is a bit more forgiving than the pd so you may be okay injectror wise..

Hopefully with the suggestions above you can resurrect your car.

Once you are running again you will still have a check engine light on the dash board and a selection of VAGCOM faults that will have to be checked and cleared systematically. This will probably persist for a while and you will loop through this process a few times, until hopefully everything settles back to normal.

My daughter's '04 Passat went through this after some smart a$$ topped off the fuel tank with unleaded petrol as a favour to her.

it has been mild about 12 degrees

Sorry to hear about your car Woosey.

A friend runs his Trooper on almost 100% veg oil, with a little more derv in it in the winter to thin it out. He swears by it, yet others swear about it.....

JRHartley has pretty much said it all. VAG engines as young as the Octy TDi ones can not run on veggie oil (lack of lubricity if nothing else).

Still, since you've only made it a few hundred metres, I think all you're in for is a bill for cleaning out the entire fuel system.

it has been mild about 12 degrees

veg oil's consistency only resembles that of diesel when heated up to 70 degC. This is why many of the aftermarket conversion kits have a pre-heater which heats up the veg oil prior to being injected. Still, I reckon a PD would still struggle to process veg oil, even at 70 degrees.

On a 2001 plate the thing is just plain direct injection and not common rail or PD.

I don't think you will have done anything massive but 50:50 was certainly too much veg oil.

It's much thicker and as already said burns in a different way. Fine in an XUD or old IDI not so good in newer engines.

I think you would be best draining the fuel tank, changing the fuel filter and pouring fresh derv in there then putting fresh derv in your tank.

I'd be prepared for a few extra fuel filter changes.

On the veg oil front, you would probably get away with 10% in a full tank of derv, but I wouldn't want to guarantee that.

The only reason i say that is because the TDI has the older style high pressure pump feeding 4 injectors off 4 fuel rails so the pressure is significantly lower and spray pattern isn't quite as important as on the PD or CR engines IMHO.

I'd not want to try it with any Octy. Even the nonPD ones use an HP common rail system, so they need more lubricity than veggie oil offers.

I work in a main delaership in belfast but i wont say which manufacturer as its French but the amount of times cars get recovered in with this prob u wouldn't beleive the common rail inection sysytem is far too sensitice to be trying funny fuels and all I can say is im glad im not on the receiving end of a typical bill 4 injectors low and high pressure fuel pumps it soon adds up to a hefty bill sometimes in the thousands not nice at all:thumbdwn:

Unless it's R*n@*1t, I think you'd find some friends here anyway (like me and CM).

Unless it's R*n@*1t, I think you'd find some friends here anyway (like me and CM).

nope its not R*****t

I'd not want to try it with any Octy. Even the nonPD ones use an HP common rail system, so they need more lubricity than veggie oil offers.

as I have already said, they don't use a common rail on the old TDIs!!!

They have a single pump and 4 high pressure feed pipes, one to each injector. The injectors are dumb and the pressure in the pipe behind it is what causes it to fire.

This is exactly the same as on the old IDI dervs except that they used to inject into a chamber and not directly into the cylinder!

You can see the 4 lines here:

http://www.burlingtonbiodiesel.org/images/vw_CCV2.jpg

A separate line to each injector!

The CR's have a single pipe at massive pressure and electronically controlled injectors to fire in the fuel.

PD is being replaced by CR!

nope its not R*****t

Well yes a PSA engine or any other CR engine will use a common system such as by bosch, but these engines don't use that!

I can quite clearly remember the TDI 90 and 110 fuel pumps and mine had 4 lines coming off on the high pressure side.

I work in a main delaership in belfast but i wont say which manufacturer as its French but the amount of times cars get recovered in with this prob u wouldn't beleive the common rail inection sysytem is far too sensitice to be trying funny fuels and all I can say is im glad im not on the receiving end of a typical bill 4 injectors low and high pressure fuel pumps it soon adds up to a hefty bill sometimes in the thousands not nice at all:thumbdwn:

Just a quick tangent on this thread but, when i got my Citroen C4 HDi i Rang Citroen to enquire about Veg oil \ Bio diesel running in that engine. Their response was that you are ok upto 30% mix, as most Euro fule stations have 15% in their pumps anyhow, i've been running that for 30,000 from new without any probs, engine runs much better on it, ok my mix % changes during the year, and i add thinning agents.

Just a quick tangent on this thread but, when i got my Citroen C4 HDi i Rang Citroen to enquire about Veg oil \ Bio diesel running in that engine. Their response was that you are ok upto 30% mix, as most Euro fule stations have 15% in their pumps anyhow, i've been running that for 30,000 from new without any probs, engine runs much better on it, ok my mix % changes during the year, and i add thinning agents.

Thats all well and good but when u see half the muck being pumped outta ppls fuel tanks u will certainly have ur ryes opened i can quiet clearly remember one car and it was almost list pva glue what came outta that how can any car run on that :eek:

Anything veg oil based is quite likely to take the sludge with it and when it gets cold will also thicken up quite a bit.

Not good to run off, hence my comment of 10% should be ok as the derv should cut it and thin it down. The more you put in the more likely you are to have issues.

Well yes a PSA engine or any other CR engine will use a common system such as by bosch, but these engines don't use that!

I can quite clearly remember the TDI 90 and 110 fuel pumps and mine had 4 lines coming off on the high pressure side.

Think your right Cheezemonkhai. I was getting confused with the low pressure return ..

but still same applies.. best to leave veg oil for IDI engines don't put it near a direct injection wether PD or Common rail or the octy's Mechanical injection. [bosch Mechanical VP37 injection.?]

Guys, if you are enquiring with the dealer about bio diesel / veg oil remember straight veg oil [sVO] or unteated waste veg oil [WVO] is not the same as Bio-Diesel.. Bio-diesel is transesterified veg oil and has had the glycerine[ol] removed. The 'stuff' they use on the continent is a mixture of , for example, 85% dino diesel and 15% bio diesel ie. proper BIO. not veggy.... Also the Bio made by Joe Bloggs in his lockup is not going to be as well made as the proper stuff. some unscrupulous people will not do the conversion process properly... they either not let the glycerol settle out properly and just drain it off 'willy nilly' or they may not wash it properly, they can overdose on methanol and this residual methanol will wreck your pump / pump seals...

please be careful..

JR

How about running a 75% veg, 25% unleaded in a PD engine? .... :confused:

[ps: kidding ]