my car is making a dodgy noise. apart from the suspension creaking every time someone gets in the car, and missing a cylinder in the mornings.
when it's cold, and sometimes when it's warm, it's making the loudest ticking noise you'll ever hear. sometimes i can get rid of it by revving right up to about 5000, sometimes it'll come back, and usually it just disappears randomly when it warms up a bit.
i know bmw's have problems with tappits, but isn't that more of a continuous problem rather than an 'i'm cold, thrash me down the motorway for a while' ailment.
of course, if i go down to the garage, it's not doing it. little sod.
anyone got any idea what it is?
(car has a 4 cylinder 1.6l engine. is 12 years old, 130,500 km on the clock. has just had a service, engine is in reasonable nick. needs a hoover.)