Having had my A4 for nearly a year now, it recently went for a full service at VASMotion.
Having been scanned etc, the lumpy idle has been put down to a misfire on idle in cylinder 1.
Is this likely to be an injector problem, or fuel rail related. The fuel rail was replaced when i bought it - for an unknown reason - and i find it hard to believe that its causing me trouble, but as it wasn't an Audi specialist I'm dubious as to whether its been replaced right.
I've been quoted £120 for an injector, and 3 hours labour to replace it. Does this sound right? May have to book it in as its getting worse, and hesitating while crusing as a steady speed now.