So- a few weeks back I complained about an erratic, (only sometimes) rough, loping idle issue with my 300DT.

It's not the motor mounts, I'm also very sure it's not the rack-dampener bolt...

I did, however, replace the hand-primer pump to the upgraded Bosch unit- and it made the problem a little bit better...

But there's still, an occasional, hard nailing/coughing when stopped in Drive.

I'm thinking it's probably an injector- is this a big job?

I've been doing a lot of reading on Monark injectors/nozzles- these better than factory?

I appreciate everyone's insights...

Randy