I own a 1994 325TDS Auto with 88k miles on it. It has been running well
but recently it's developed a natsy wobble from the engine at idle.
There's no sign of a problem once moving, performance is fine. The air
filter and fuel filter have recently been replaced, I've run injector
cleaner through it, a local non-specialist mechanic has looked at it all
to no avail. This has come on gradually, a while ago it gave an
occasional wobble, now it's continuous. It's not running irregularly
it's just got a rythmic wobble--a bit like a petrol engine that's
running too rich, only worse.
Can anyone suggest the most likely cause or suggest what I should
investigate and how?
I'd be grateful for any assistance anyone can give.
(Chandler's Ford, UK)