Marine: Boating, Sailing, PWC, GPS and Navigation - timing

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rick lower
07-24-03, 09:24 AM
1968 chrysler 55hp m#55731 s#2457
it runs fine at higher rpms but has a knock when idling


BoatMech
07-24-03, 10:51 PM
What exactly does it sound like.
It could be a lean cough.
In that case, you may want to look at the
carbs and leave the (hopefully) untouched timing alone.