Hi, had my VRS for a couple of years now, it has been the best thing Ive done car wise in a while after my RX8. 

However, I've always had a bit of a rough idle and yesterday it felt down on power and hesitant around 1500-2000. I had the AA man come out to it after I had put the fault reader on and got no codes. The fault disappeared without him doing anything, but the rough idle is still there. He read the flow return rates on the injectors and the came out as 1- -0.44 2- -0.45 3- -0.25 4- 1.75. This went up on 4 to 2.5 when running and the others seemed to stay the same.

 

I haven't had the egr off to clean, although I have got the restrictor gasket from skoda that needs drilling to 11mm to knock that back after it has.

 

Any help guys.

Why don't you do that EGR work first before you start chasing shadows, EGR flow issues are known to cause issues with stuttering such as you describe.

Its just weird it seems to have sorted itself. Back to just an occasionally wobbly idle. Just hoping it wasn't the loom breaking down and wanted a bit of clarity on the injectors as the numbers seemed odd. The AA man said that the numbers meant a flow return rate for the fuel and I've since learned out they should all be at near zero apparently. When I bought it it went back to the garage for an error code that kept turning up, they replaced the glow plugs and I think the coil pack on top of number 4, and the prob didn't reoccur. I don't know if they turned the error code off permanently in VAGcom just so I would go away.

8 hours ago, Blacksun said:

Its just weird it seems to have sorted itself. Back to just an occasionally wobbly idle. Just hoping it wasn't the loom breaking down and wanted a bit of clarity on the injectors as the numbers seemed odd. The AA man said that the numbers meant a flow return rate for the fuel and I've since learned out they should all be at near zero apparently. When I bought it it went back to the garage for an error code that kept turning up, they replaced the glow plugs and I think the coil pack on top of number 4, and the prob didn't reoccur. I don't know if they turned the error code off permanently in VAGcom just so I would go away.

 

It's a diesel, they don't have coil packs.

The individual electric gubbins that controls an element of the glow plugs.

 

Any help on the fuel flow numbers?

11 minutes ago, Blacksun said:

The individual electric gubbins that controls an element of the glow plugs.

 

Any help on the fuel flow numbers?

 

Yes, they're meaningless on a worn engine. However 'in spec.' is nominally +/- 4.00 so all yours are well within limits.

 

Like I said; shadows.

 

Sort the EGR first then see how it is, chances are you need a new EGR valve.

Fair enough, the numbers may well be a ghost. Hopefully I can look down the barrel of the EGR this weekend, even if I don't take it off.