nope, smooth as silk at idle, and smooth rest of the time bar 40mph. The maf has been cleaned, and then run disconnected to double check (apart from being a bit sluggish on the uptake when disconnected the maf made no difference to the stutter) There are no fault codes on it at the moment (admittedly with a non vag-com reader, just a gendan engine check, vag-com on the way if the old lappytop will talk to it, it's a bit fussy) The belt was changed (according to paper work over a year back and its only at 88thou now) so they could have made a mess of it and a new one is on my to do list possibly summertime, but i will probably delegate that one out i don't fancy it without the locking kit. I'm fitting a new suction pump within the next week (arrived today in the post) so i will check the inlet manifold nuts are tweaked down when i do that and all the breather pipes a new and shiny (though it wouldn't matter if they were blocked because they had fallen to bits, interesting design using hard walled solid plastic piping.......) is there a way to check the change over valves? If i blip the throttle up the arm moves on the over-run as it winds back down (responding to the vac i assume) so i assumed it was doing something and wasn't stuck, not to say it isn't snapped though. Any big air leaks or mechanical maladies i would expect to show up all over the rev range not just at 40...it's not big or violent but you can feel it. If it makes a difference it's an ACK engine and almost everytime i order bits they're wrong!
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