this might just be down to unusually cold weather, but my 606-powered 124 will start to stumble a bit after the first cold start of the day. It starts fine, but after about 2-3 secs running sounds like it's mis-firing with the revs going up and down until I give it a bit of gas, then it smooths out after a few more seconds.

I recently changed 4 of the 6 glow plugs, which seemed to cure the bad 'chugging' I had on start-up before when moving off.

__________________
1993 320TE M104
---------------------------------------------------
past:

1983 230E W123 M102
1994 E300D S124 OM606 (x2)
1967 250SE W108 M129
1972 280se 3.5 W108 M116
1980 280SE W116 M110
1980 350SE W116 M116
1992 300E W124 M103
1994 E280 W124 M104
----------------------------------------------
"music and women I cannot but give way to, whatever my business" -Pepys