Robyn - Whole fuel filter housing and filter just changed last week when I did the whole system clean out thing.

Glow plugs are less than a year old - quick heats from Kennedy. Put 4 AC Delcos in on the driver side last week just to see if they changed anything. It didn't. Checked the glows using the old batter cables and they glowed pretty quick.

Miles just hit 300K

Check engine light has never come on but have not pulled codes yet.

PMD change out has been a while - have a Heath remote mounted unit. I do have another one I can swap out that came on my last IP. Should I swap that out to eliminate it as a possibility?

Thanks