PeachParts Mercedes-Benz Forum - View Single Post - w124 94 e320 failed nj emissions please help

LUVMBDiesels · #8 03-30-2009, 12:44 AM

I would get a can of seafoam and run it into the engine through a thin vacuum hose, one that goes into the intake manifold. I use a clear plastic hose going from the fuel pressure regulator in the BMW so that I can see the stuff getting sucked out of the can. Let it sit for 15 minutes, then start the car and drive it on the highway. Be ready for the clouds of black smoke !

Once that is done, change the plugs and wires.

Also check the cold start injector and idle control valve. you might want to take the ICV off the engine and spray carb cleaner into it. Mine was stuck and cleaning it fixed it. When you take the car back to the inspection site, disconnect the cold start injector.

If your reverse lights don't work, you will fail the test.

I hated the inspections when I lived in NJ.