Spray wd40 or starter fluid (carefully!) around each injector and the egr tube and listen for upswing in rpm. But if you've got a 2k idle, I'd say go straight to the egr pipe first before the motor and exhaust get hot. Then Take it off and check it out good. You breath on them funny and they crack.
[This message has been edited by f85gtron (edited 07-12-2015).]