My 96 SVX has failed it's emissions test. There are no codes in the system, plugs, & air filter look good. Runs great.
The e-test showed it failed in HC only. CO & Nox both passed.
I'm in Colorado where they run an IM-240 (ie. dyno) test.
The HC ran high across the board, while all else was good.
Any ideas on where to start?