Just had the rad flushed and they replaced the thermostat at the same time, as I was getting some heat but not alot.

Immediately noticed a massive difference in the acceleration and the responsiveness in general!

Still haveing problems with a very hard start, especially in the am ... takes 4 to 5 times before catching in a hesitant way, then working up to nice hum.

Any ideas what may be causing the hard starting? TIA

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1988 Mercedes Benz 300 SE, W126, 184,986 km
1989 BMW 535i, E34, 351,000 km