Cap rotor issue

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  • csmitty
    Noobie
    • Mar 2013
    • 27
    #1

    Cap rotor issue

    Good evening. Looking for a bit of help with this. Picked up a non running 325 with the 2.7 last week. He said it ran, then went to start it up next day and got nothing. So I figured it was nothing catastrophic. So just going though and tearing it down some to check everything out and came across this.



    A few points have obvious contact with the rotor while others look about normal.

    The rotor.



    Could this be the result of some camshaft issues or just a mis-alignment?

    Thanks for the help!
    Tags: None
    • jlevie
      R3V OG
      • Nov 2006
      • 13530
      #2
      That looks pretty normal to me and is probably just spark erosion.
      The car makes it possible, but the driver makes it happen.
      Jim Levie, Huntsville, AL

        Comment

        • csmitty
          Noobie
          • Mar 2013
          • 27
          #3
          Really? The freshly shaved off brass just didn't seem right to me. And only being on about half of the points.

            Comment

            • bmwstudent
              E30 Fanatic
              • Sep 2011
              • 1364
              #4
              + 1 for normal
              sigpic

                Comment

                • dnguyen1963
                  R3VLimited
                  • Nov 2011
                  • 2648
                  #5
                  It does not look normal to me. Two prongs were shaved down significantly; whereas others looked fine. I do not know the cause, but maybe the rotor was not tighten down properly. You need a new cap at the least.

                    Comment

                    • csmitty
                      Noobie
                      • Mar 2013
                      • 27
                      #6
                      Yea. Def gonna do new cap and rotor. Wires too most likely.

                        Comment

                        • e30construction
                          E30 Addict
                          • Jan 2013
                          • 591
                          #7
                          just changed my wires cap and rotor a cpl days ago and they wer super old and i gotta say it looked nothing like this..something wasnt sitting right there or something was loose
                          sigpic
                          93 325i 120k
                          mods: straight pipe,eibach sport springs,style 54s,kamotors carbonfiber cai,
                          future mods: chip, m3 cams, headers, turbo

                            Comment

                            • rodpaine
                              Noobie
                              • Mar 2011
                              • 33
                              #8
                              I've seen this a couple of times over the years. You have an off-center cap or the cap was not seated properly when it was tightened down. Who manufactured the cap?
                              Rod's 528e support web site
                              A car can be restored many times. It is original only once.

                                Comment

                                • Andy348
                                  Mod Crazy
                                  • Sep 2009
                                  • 687
                                  #9
                                  I have the exact same problem. Replaced the cap with a new Brembi one and still did the same thing.

                                  The black cover that goes in the distributor, its supposed to be put over the rotor and then the distributor bolted on, correct? Is it supposed to be infront or behind the timing cover?

                                    Comment

                                    • csmitty
                                      Noobie
                                      • Mar 2013
                                      • 27
                                      #10
                                      I'll have to check on the mfg. don't think it was Bosch which is what I was going to replace with.

                                      Is it possible the cam timing gear could have some runout causing a wobble to the rotor?

                                        Comment

                                        • csmitty
                                          Noobie
                                          • Mar 2013
                                          • 27
                                          #11
                                          Both my cap and rotor are Bremi

                                          The install could have been messed up as 2 of the hex screws holding the rotor on were messed up like using the wrong hex key. Not me though.

                                            Comment

                                            • Andy348
                                              Mod Crazy
                                              • Sep 2009
                                              • 687
                                              #12
                                              I'm really not sure. I replaced mine and within 2-3 days it was like that again. Only thing I can think of is that black cover becuase I'm sure I've tightened all the bolts.

                                                Comment

                                                • E30Gus
                                                  Mod Crazy
                                                  • Jun 2008
                                                  • 781
                                                  #13
                                                  There is no way that is normal. Something isn't seated properly.

                                                    Comment

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