Thank you all for the advise........

My air filter should be OK just changed it last year. I probably am due for a fuel filter change, I'll do that before I retest. I think I'll just run the fuel down a bit add some redline and try to find some premium diesel. Does anyone know of a place in Ct that sells it?

For the member who asked, the emissions test is performed at 1800 rpms. Tomorrow I'll take a run up to New London on I-95 and see if I can blow out some carbon.

I plan on getting a re-test in about a week to 10 days. I'll post the result. Thanks for all the advise.