I have a 1985 300TD with 290k miles. It is in generally excellent shape.

About 700 miles ago I started to experience a pretty rough idle. Hard to cold start with lots of smoke, then an intermittent rough idle when warm.

Sometimes i'll pull up to a stop light or take my foot of the accelerator and everything will be smooth, but 60% of the time the idle is quite rough. As I say, this is a new symptom.

To track this down, I've replaced the glow plugs, confirmed the glow plug relay is working right, replaced the fuel injectors, done a valve service, and tighten up the rack damper bolt.

She runs great on the road, but still has an intermittent rough idle and hard cold start.

My mechanic feels it is the fuel injector pump... and I have to admit I can't think of any thing else it could be.

So, I'm looking for a fuel injector pump rebuild.

Anyone have a good experience with a mechanical fuel injector pump rebuilder lately?

Thanks,

Bill