It starts fine when cold.
Sound like it runs smooth, but not quite (intermittent slight sputter,
hardly detectable). Drives fine, maybe lacking a little spunk.
Once it warms up it barely makes it up a hill or stalls. When trying
to re start, it cranks and and won't fire. while cranking sometimes
even the cranking stalls for a second.
IF I let it sit until cold it will start right away and repeat the
cycle.
Doe anybody have an idea, what M 103 / 300E engines are notorious for?
car has approx 130k.