i have a few theories, maybe the valve adjustments settled in, like now the engine wants the valve has to be not exactly as spec since it was far from spec prior to adjustment... maybe it's just the cold weather, and when it's warm the problems will come back, though once the engine is warm it shouldn't matter what the temp is outside.
i'm not really sure at all, the problem is not completely gone, but it's much less severe that i can live with it for now. i do want to get the valve job, but i just keep waiting, and i haven't gotten quotes yet. i'm going to try the liqui moly motor oil saver that claims to rejuvenate seals.
the one thing that is just as loud if not louder is the nailing, what sounds like injector nailing, which is occurring despite having pressure and spray tested them.
my theory is also that the 1st cylinder is still having lower compression, which would explain everything else, including the winter issue i'm having that on a cold start, it stalls when i let go of throttle, until it's warmed up a bit. my workaround has just been to give it slight throttle to 1000 rpm.
how big a job is changing the cap and valve nuts?
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w123
1985 300D turbo sept 2015 - present
1985 300TD turbo oct 2023 - present
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