Is this the fuel regulator

[Jerseyjohn]

Gentlemen and Ladies

more help please.


Part 15. Is this the fuel regulator?
Do they fail or can any one tell me of a new one I can purchase.

Thanks again

John

[phillpot]

comparing with this diagram I reckon your 15 is the "Accumulator", C




this diagram, on the other hand, refers to it as the fuel "regulator"

[Jerseyjohn]

thank you

do you know if I can purchase a shiny new one any ware?

[phillpot]

Jerseyjohn said:

do you know if I can purchase a shiny new one any ware?

like this one ?

[greymrj]

15 is indeed the fuel regulator or accumulator. They are there in the K Jetronic system to reduce the pressure fluctuations caused in the fuel line by the fuel pump, and to hold pressure up when the car is switched off. The K jetronic is very sensitive to fuel pressure.
The unit appears to be very reliable. I do not actually know of any of we S1 owners who has changed one, someone may come in on that. I have changed every other part!
There have been occasional ones on ebay but the demand for them seems very small.

I could be wrong but I am not totally convinced they are necessary! My belief is that the big fuel filter fitted next to the jetronic metering unit will do an adequate job of damping out and pulses from the pump. It certainly doesnt hold the pressure up for long, I always switch mine on and give it a few seconds for the 'clicks' from the pump to stop before starting the engine. But then I am used to the old SU pumps when I always had to do that anyway.