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No spark, need ideas

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    No spark, need ideas

    So I have a 1987 325i vert and I recently had done a head gasket on it, but now it'll crank and I'm not getting any spark, I checked for spark from the spark plug wires and no spark, then tested to coil-dist wire and it was at 2k ohms of resistance, the wire itself says It should have only 1k, would this cause no spark at all due to the higher resistance? I also put in a new coil after all of this and still no spark, battery is fully charged and it's a brand new ignition system(cap/rotor, plugs, and wires). I'm so lost as to where I should check next, I'm a broke college student and I really do not want to throw random parts at it. Also, before I replaced the head gasket it did have extended cranking times, 15+ seconds, but when it started it ran fine, I changed nothing with the ignition system before the head gasket. Id appreciate any suggestions as to what else I may check to fix the problem! Thanks
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    #2
    You may have swapped the CPS and CylID connectors, which will cause a no spark condition.
    The car makes it possible, but the driver makes it happen.
    Jim Levie, Huntsville, AL

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      #3
      Already tried that, did all the same tests while swapping the sensors
      sigpic

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        #4
        spark on NO plugs? check for dist rotation
        sigpic
        Streetable poly mounts, trans mounts are here!
        http://www.r3vlimited.com/board/show...ght=streetable
        '94 318i
        '07 335i
        '11 X5
        '89 325ic m30b35

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          #5
          Yup, no spark on any of the plugs. And dist rotation meaning? The dist is stationary
          sigpic

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            #6
            rotor, sorry...
            sigpic
            Streetable poly mounts, trans mounts are here!
            http://www.r3vlimited.com/board/show...ght=streetable
            '94 318i
            '07 335i
            '11 X5
            '89 325ic m30b35

            Comment


              #7
              Check for spark at the coil wire. If no spark there, then either a bad coil or the coil isn't getting signal to spark. Since you replaced the coil, I'd test the CPS and make sure it is good.

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                #8
                Originally posted by NitroRustlerDriver View Post
                Check for spark at the coil wire. If no spark there, then either a bad coil or the coil isn't getting signal to spark. Since you replaced the coil, I'd test the CPS and make sure it is good.

                Ill give that a try, would you happen to know the proper readings it should have?

                Originally posted by G-Man the Visionary View Post
                rotor, sorry...
                no worries! ill check that also! wont be able to test these out til this saturday, unfortunately, away at school for the week
                sigpic

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                  #9
                  Anyone in the San Francisco/Daly city area willing to stop by my place to help me with this problem? Tested CTS, cyl id , icv, replaced coil(bosch), since last update and still can't find what the problem is with the no spark issue and I'm going insane about this. Any help would be greatly appreciated.
                  sigpic

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                    #10
                    Have you tried re-installing the old spark plug wires, attaching a ground from the engine to the head(should already be grounded via headbolts) and checking the rubber on the harmonic balancer is good and hasn't shifted your reference mark? Maybe a cut/disconnected wire is preventing powering up and/or triggering your coil?
                    Last edited by uturn; 07-21-2014, 12:52 AM.

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                      #11
                      Originally posted by uturn View Post
                      Have you tried re-installing the old spark plug wires, attaching a ground from the engine to the head(should already be grounded via headbolts) and checking the rubber on the harmonic balancer is good and hasn't shifted your reference mark? Maybe a cut/disconnected wire is preventing powering up and/or triggering your coil?
                      I threw away my old wires, assuming these wires would be okay, and there was no ground strap from the head on the engine, I'll try and find a ground strap and see if that helps. The harmonic balancer was in good condition, and the dowel pin for it was on there right. And I test for power to the coil and then too the distributor, it looks like the power stops from the coil to dist wire. I'll try finding a new wire set because the coil to dist had 2k ohms when It is labeled 1k ohms.
                      sigpic

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