Diesel versus Petrol

tdiman said:
Correct me if I am wrong but how does petrol get anywhere near your throttle body? always thought it was either injected into the inlet manifold or in some cars direct into the cylinders!, surely the trottle body is upflow of that area.
What I think we have is the results of the EGR system, therefore no petrol gets anywhere near there!
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yeah, I think so too! IIRC the FSI engines injects the petrol like a diesel, but the 1.4 is a typical petrol with normal intake and fuel delivery systems. So it must be the air filter that let the black sticky stuff coat the valve?
 
Honest John

"75 bhp 1.4 petrol engine offering a Euromix of 46.31 mpg or a 3-cylinder 1.4 litre 75 bhp, 144 lb ft TDI pump-injector diesel offering a Euromix of 67 mpg and up to 81 mpg touring. Both do 108 mph and 0-60 in 12 seconds, but diesel is more fun to drive."

see: http://www.honestjohn.co.uk/carbycar/index.htm?p_make=AUD&h_make=AUD&p_model= 15

If you are in EIRE and hence Eurozone then consider importing the (in my opinion!) best in the range: 1.2 TDI. Far better than a Prius for both city and long distance driving. Road tax free in UK, low insurance, 90mpg (3 l/100km), inexpensive tyres (£35 to £40 each fitted) but LHD and very rare to find a good one cheaply.

Remember also that the future is CO2 emissions: 1.4 Petrol 144g/km, 1.6 Petrol 142g/km, 1.4 TDI 119g/km and 1.2 TDI 81g/km

Red Ken is to exempt all cars below 120g/km from London congestion charge in 2008.
 
ecoangel said:
"75 bhp 1.4 petrol engine offering a Euromix of 46.31 mpg or a 3-cylinder 1.4 litre 75 bhp, 144 lb ft TDI pump-injector diesel offering a Euromix of 67 mpg and up to 81 mpg touring. Both do 108 mph and 0-60 in 12 seconds, but diesel is more fun to drive."

see: http://www.honestjohn.co.uk/carbycar/index.htm?p_make=AUD&h_make=AUD&p_model= 15

If you are in EIRE and hence Eurozone then consider importing the (in my opinion!) best in the range: 1.2 TDI. Far better than a Prius for both city and long distance driving. Road tax free in UK, low insurance, 90mpg (3 l/100km), inexpensive tyres (£35 to £40 each fitted) but LHD and very rare to find a good one cheaply.

Remember also that the future is CO2 emissions: 1.4 Petrol 144g/km, 1.6 Petrol 142g/km, 1.4 TDI 119g/km and 1.2 TDI 81g/km

Red Ken is to exempt all cars below 120g/km from London congestion charge in 2008.
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Hi Lukas,

here in ROI there is a prohibitively expensive tax on importing cars. It is called VRT and is levied at 25% of what the government state the car is worth. This is always far in excess of what you have paid for the car or what the market value in Ireland is. I am sure a buyer would be lucky to escape with €3k in VRT for bringing in an A2TDi.

Because the road tax here is higher in the UK as well it would be €251 pa for the 1191 engine. About £170. A 1422 diesel engine would be €313 pa (approx £212) and the 1390 petrol would be €292 pa (£200) so tax savings are minimal.

Petrol and Diesel are cheaper in ROI than the UK at about €1.10 (75p) per litre.

There would be no cost saving for importing a A2 1.2TDi at all but maybe an importer could feel good about their green credentials by doing so.
 
humps said:
yeah, I think so too! IIRC the FSI engines injects the petrol like a diesel, but the 1.4 is a typical petrol with normal intake and fuel delivery systems. So it must be the air filter that let the black sticky stuff coat the valve?
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Nope, it's from the wonderful EGR valve which recirculates the exhaust gas through the intake system for another burn that causes the sooty deposits, hence some TDI owners either block or disconnect the pipe or control it via VAG com to reduce it's impact, in fact I'm thinking of doing it to my A4 once I replace the turbo now the seals have gone!!!
 
considering the time involved in doing the job (including losing a bolt and having to unbolt half the damn bumper to get it again), it's definitely worth doing it yourself. It took about 2 hours, with 15 mins of that dealing with the clip on the air intake (my molegrips aren't big enough!) and another 30 dealing with the lost bolt. The results were immediate, without any calibration. More go, more ESP (fresh snow last night), more noise, better hanging on the pedal, blipping on the way down was easier and made more sense.
Very happy with the results. Now for the next bits... ;)

And now, back to the feature presentation....
I don't remember how many kms the Diesel A2 I drove had - but i prefer my own. Tax is a real pain - we also have to pay lots here and therefore a diesel is only worth it after a serious number of kms per year.
Drive them, check if they're compatible with your style!

Bret
 
Sorry yes I was just being stupid, however I guess that cleaner fuel = cleaner exhaust gases = less rubbish to recirculate hence less deposits less in the throttle body?
 
I dont think that it is the 90ps version.


It looks like that it has rear drum brakes from the top middle picture. And as you have said no red i badge too.
 
manhattan$ said:
I dont think that it is the 90ps version.


It looks like that it has rear drum brakes from the top middle picture. And as you have said no red i badge too.
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Stupid question perhaps, but is there a big difference between the two?
 
As far as i can remember, the turbo is different, some engine parts, the rear brakes are discs, and the red "i" badge. I have not driven a 75ps version, only the 90ps but i am sure a few guys here have driven both.
 
Hi spav
Another watchout is the description says it has aircon but the picture of the dash shows otherwise. Models with the climate control option have touch buttons and a digital display so dont have the 3 knobs below the radio unit. There is an ECON button below the centre control knob but this is to turn off the auxiliary heater and not to switch off the aircon as some dealers think.

With CC fited, the ECON button does have other functions but I won't confuse the issue further.

Cheers Spike
 
chucknaldo said:
Hi Spav there are two ways of spotting a 90, first off the 90 has a red i on the rear tdi badge and secondly they have rear brake discs as opposed to brake drums which are on the 75's. i have a 75 and find it to be very sprightly, even more so since i have chipped it...:D
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Hey!
Can you tell me a bit more about your experience in chipping? I've got a A2,1,2 tdi with a power box, 190NM and 86HP. Moves really good...

Sorry
bad english...
 
Thanks again for the advice chaps. Decided not to go for it - it's a bit overpriced, and it seems the dealer is trying to pull a fast one.
 
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