I have a '97 Merc 200 EFI SN 0G350446.
There has been little use on this motor before I bought it, all original that I can tell. I would like to replace the reed valves with a TDR set and get the injectors calibrated. I am able to do the labor and get these removed and sent off. Question is, am I at risk of anything by doing this on my own and installing updated parts compared to bringing to a shop and having it done along with checking the rest of the motor out.
The motor runs great, a bit rough when idling around (which is why I am looking at reeds and injectors), but once throttle is applied it takes off like a rocket when it hits 2500 rpm or so.