Your 164 is 12v or 24v? CAN'T REMEMBER. Please add car to your signature or in post.With no apparent warning, the 164 was hard starting this morning, and ran poorly (missing) just coming off idle. Kind of OK with revs up a little. Did it again when I came back from the grocery a mile away. I let it warm up good, but missing persisted. Weather is fair and no heavy rain. Just this sudden problem with no warning.
The only thing I could think of is sheared Gilmer belt tooth. Maybe plugs, but too sudden feeling, though.
Could be a leaky vacuum hose, I suppose.