Question for a Friends Nautique

[2in2out]

memory is a little foggy now and not sure which engine nautty uses but didn't skiers choice have issues with o2 sensors around that same year on a LOT of boats? seems I recall reading on here some that were having to replace 02 or exhaust mainfolds due to some bad parts from the factory.
maybe similar issue.

Wasn’t that the period when people were experiencing catalyst collapse in the cats?

Typically error was post cat O2 sensor indication if I recall correctly. When sensors were replaced and same error occurred, on further inspection it was found the upper portions of the catalyst collapsed not allowing free flow to post cat sensors.


2022 SA 450

[sandm]

Wasn’t that the period when people were experiencing catalyst collapse in the cats?

Typically error was post cat O2 sensor indication if I recall correctly. When sensors were replaced and same error occurred, on further inspection it was found the upper portions of the catalyst collapsed not allowing free flow to post cat sensors.


2022 SA 450

sounds right.