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Rough idle

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    #1

    Rough idle

    I cleaned my EGR ports and the last port I drilled, a piece of drill bit broke into the EGR port. I used a light and could not find the piece of drill bit in the port. I started my car and it ran and idled fine. Then yesterday, it started idle rough and sputters while driving. Could the piece of the drill bit be causing this or something else?

    Timing belt was changed ten thousand miles ago
    Tune up was changed ten thousand miles ago
    Filter was changed
    Spark plug and spark plug wires changed
    Distributor cap and rotor button changed
    Distributor changed five thousand miles ago
    Change PCV valve ten thousand miles ago
    Oil change five hundred miles ago
    Valve adjustment changed ten thousand miles ago
    Tags: None
    #2
    Pull the spark plugs and check which one is not firing well. Or replace all with new ones and see what happens. It may run well.

    Small broken bit may have caused damage but let's not think about it for now. You may have gotten lucky, still.
    A&P-IA

    Comment

      #3
      Ok, I will check spark plugs. I'll let you know how it do.

      Comment

        #4

        This is the #1 spark plug


        This is #2,3,4 spark plug

        Comment

          #5
          i dont think a drill bit would cause that to happen. are you leaking oil into that cylinder?

          Comment

            #6
            Open the gap of #1 plug to proper gap. Take small magnet through the plug hole and see if you can fish out the broken bit. Put the plug back in then run the engine. Or, replace that plug. The engine should run good.
            A&P-IA

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              #7
              actually yeah. if that plug was bent like that then it wouldn't fire properly which would explain the heavy carbon and bad idle. if the drill bit is in the cylinder, then everything in there is probably trashed. messed up valves, scored combustion chamber, gouged pistons. easier to just replace the engine if thtas the case

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                #8
                Ok, I replaced all of the spark plugs and bought a magnet and tried to fish the drill bit out of the cylinder and nothing came out. I started the car up and let it idle for two minutes and it ran fine like nothing was wrong with it but I did not drive it. I was thinking of removing the cylinder head and removing the drill bit that way. What do you guys think??????

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                  #9
                  Originally posted by kdsjyc View Post
                  Ok, I replaced all of the spark plugs and bought a magnet and tried to fish the drill bit out of the cylinder and nothing came out. I started the car up and let it idle for two minutes and it ran fine like nothing was wrong with it but I did not drive it. I was thinking of removing the cylinder head and removing the drill bit that way. What do you guys think??????
                  That's really unnecessary, pull all of your plugs and use the magnet in all the cylinders. If you find nothing, either you already ejected it out, or its stuck in the EGR passages. So at most i would remove the intake manifold and look in the ports.
                  Originally posted by Mishakol129
                  Do not disrespect my intelligence. I am the smartest person I know : )

                  Comment

                    #10
                    If nothing came out of #1 cylinder, the bit is more than likely out of the cylinder. I would drive the car and see what else comes along.
                    A&P-IA

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                      #11
                      This is what all four spark plugs look like after 12 miles of driving. And I idle the car for about 15mins and runs good and idle good. What yawl think I should do next? Just keep driving it and see what happens?

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                        #12
                        Can't fix what's not broken.
                        A&P-IA

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                          #13
                          Originally posted by oyajicool View Post
                          Can't fix what's not broken.
                          At least he's using NGK's.
                          Originally posted by Mishakol129
                          Do not disrespect my intelligence. I am the smartest person I know : )

                          Comment

                            #14
                            Originally posted by dj_ender View Post
                            At least he's using NGK's.
                            The manual is old and says to use ZFR6F spark plugs, so do these plugs still exist ?! or I can replace them a different number ?!

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