I have a 1989 W124 purchased last year at 134,000km and now with 143,000km.

The car is perfect other than the fact it has a tendancy (usually when warm) to start and then die then always starting perfectly on the 2nd attempt.

On the first attempt the engine will burst into life finding 1000-1100 rpm then fall, failing to hold idle speed, back to 0 rpm.

The car has been serviced and tuned with all new plugs, air filter etc. by a Merc specialist. I even had the fuel accumulator checked out last service. Car is run on premium fuel. Compression was checked out on purchase and otherwise the performance of the car is excellent.

My service guy suggested that the injectors may need to be replaced.

I note that in Stu Ritter's E Class Bible he mentions what might be this problem under 'Driveability (M103 Engine)' page 143, the fix being to adjust fuel distributor lower chamber pressure to effectively richen the mixture.

Has anyone experienced and fixed the same problem or can suggest otherwise?

Ultimately it may not be possible to have have eveything perfect but no harm in trying

Thanks