Announcement

Collapse
No announcement yet.

Failed emissions test

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Failed emissions test

    HC
    15mph Max: 135 Meas: 196
    25mph Max: 110 Meas: 193

    CO (%)
    15mph Max: 0.83 Meas: 3.90
    25mph Max: 0.63 Meas: 3.51

    Anyone know where I should start looking?

    #2
    what car? have you done any maintenance on it? how old is the cat?
    ______________________
    ex-Chief Operating Officer
    Blunt Tech Industries
    West Coast and Pacific Rim

    Comment


      #3
      86 325es, the only thing i have done was changed the oil and pour in a bottle of fuel injector cleaner. the cat is probably as old as the car.

      Comment


        #4
        Spark Plugs, Air Filter, Fuel system cleaner, Oil Change,

        Conditions of:
        Exhaust system - any holes, severely rusted areas?
        Catalytic Converter - how old, rust?
        Pipe Gaskets - rusted out, new, old?
        O2 Sensors - working properly?
        Gas Cap - pass vacuum test?

        EDIT: run a complete fuel system cleaner through a 1/2 to 3/4 tank, Flush your oil and refill completely, Get a new Air filter and check the intake system (boot, box and all) for holes, leaks etc, Get new Spark Plugs!
        stephenbrody.com

        Comment


          #5
          new o2s and methanol hydrate.. 8)

          no, but you might need to check for fuel, since you're running leaner than usual, hence the higher HC

          Comment


            #6
            high HC's usually point to a bad cat. it probably wouldnt hurt to get a new one. its done its job for 22 years lol
            Need a performance chip for you BMW? Shoot me a PM and I'll get you taken care of!!
            Taylor- Follow me on Instagram @e30_fiend


            Comment


              #7
              Tune-up and a Cat and you should pass. Mine did the same in my M20b25 vert. I had the original cat on it with 300,000 miles on it. I changed it out to a Magnaflow Hi-Flow and passed smog with flying colors.
              sigpic...

              1991 325is- Current Project w/ 150k on the clock
              1990 325ic- SOLD w/425k on the clock and still ran!
              1985 528e- SOLD
              1972 2002tii-Should have never sold it!

              Comment


                #8
                Originally posted by iignite View Post
                new o2s and methanol hydrate.. 8)

                no, but you might need to check for fuel, since you're running richer than usual, hence the higher HC
                fix'd


                My vote goes to cat as well, but a tune up wouldn't hurt.
                Byron
                Leichtbau

                Comment


                  #9
                  Those numbers say RICH
                  sigpic

                  Mike

                  '91 325i track car. Mostly...

                  Comment


                    #10
                    Just get the hookup and get it passed already
                    YOUTUBE: AR Perez
                    - - -
                    If lucky, the E36 will die peacefully, in its natural habitat, and be given the prestigious honor of donating its parts to an E30

                    Comment


                      #11
                      Did they give you any NOx readings?

                      Comment


                        #12
                        oops, got confused with HC and NOx..my badd...

                        Comment


                          #13
                          Yeah I definitely will give it a tune up and a new cat. Although there is this strong smell that the car emits, just not sure where it's coming from. Almost like fuel that is unburnt. I have passed the NOx part of it.

                          Comment


                            #14
                            If you passed on NOx you're probably running rich, so that does sound correct if you're smelling fuel.

                            Comment


                              #15
                              did a compression test and here's what it checked out. 3 cylinders are low

                              cylinder from front of the engine to back
                              1 155
                              2 130
                              3 110
                              4 150
                              5 155
                              6 125

                              just wondering why its dumping a ton of fuel, because when i pulled out the plugs i can smell fuel.. and they are new plugs too.

                              Comment

                              Working...
                              X