I meant the respondent with the engine noise

It amazes me that the Griot's catalog will display their tools with an exotic in the backdrop and a Fram filter.

Is it possible to check chain tension when the engine's not running? If you pull the valve cover and tug on the chain, how much slack should there be?

Is it possible to check if the tensioner is at full extension?

Sixto
91 300SE
81 300SD