Menu

1999 chevy 3100 – Manually Turn Engine

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here 1999 chevy 3100 – Manually Turn Engine

  • Creator
    Topic
  • #847536
    George GallenGeorge Gallen
    Participant

      Seems like a simple question, but I can’t seem to find the specifics…

      I need to manually check if a 3100 chevy engine on a 1999 malibu is seized.

      What sized socket do I need, and where does it attach on the engine.
      And also, which direction do I need to turn it.

      Thanks
      GG

    Viewing 8 replies - 1 through 8 (of 8 total)
    • Author
      Replies
    • #847548
      Frank GonzalezFrank Gonzalez
      Participant

        To make it easier to turn the engine, take out all the spark plugs first. I don’t know what socket size is needed. And you turn the engine clock wise .

        #847557
        George GallenGeorge Gallen
        Participant

          In this case, I’m looking for a is it seized or not test. Half the plugs are hidden. Usually this would be the last step in the no crank s, cenario, but given it was after a major overheating episode with almost no oil as well……I’m jumping to the end first then I’ll check , if that passes then I’ll happily assess the starter and friends….

          #847562
          Joshua EasonJoshua Eason
          Participant

            Turn it from the balancer bolt. Clockwise. If it’s stuck try it a second time with the serpentine belt taken off to ensure its not a siezed accessory (ie. Alternator, PS pump, AC compressor). Your engine should bar over at least 2 full revolutions by hand.

            Sent from my XT1254 using Tapatalk

            #847568
            George GallenGeorge Gallen
            Participant

              Thanks. after a few more searches with some new key words….looks like it’s a 15mm bolt.

              GG

              #847570
              George GallenGeorge Gallen
              Participant

                What is “bar over”? Do you mean one full camshaft rotation?

                #847904
                Joshua EasonJoshua Eason
                Participant

                  “Bar over” is a term that just means to turn the engine by hand with a breaker bar. like what we are talking about. To answer your other question, yes. you are looking for two full rotations of the crankshaft to verify that all camshafts have completed one full rotation. the other thing that checks is for binding in your crankshaft and possible interference from anywhere else. in your case, with what you described, as far as the no lube situation the car experienced, I wouldnt be suprised if you were in fact seized at one or more of the crankshaft main journals. good luck.

                  #847910
                  George GallenGeorge Gallen
                  Participant

                    Not sure. It’s possible that it may just be the starter – and I think the thermostat also. The first night when it overheated, we thought it was just low on antifreeze, so we added more in – and by the time it was home, it was bubbling out of the overflow container, so i could have totalled out the starter.
                    It was the next day, it overheated again, and then the car wouldn’t start.

                    It’s been more of a do we try to fix it, or put that money in another cheap car.

                    Replacing the starter and themostat is fairly cheap – Of course now, it also involves the ignition switch and cylinder (since we can’t find the keys)
                    But if we can get it going again for a couple hundred – maybe it will get us through till summer.

                    We bought it origijnally for 1200.00 2 years ago – it only needed a tensioner pulley so far, and tires – so it was a decent bargain.
                    would consider another malibu around the same years as a replacement.

                    #848311
                    George GallenGeorge Gallen
                    Participant

                      woo hoo….Engine tuns easily, with plugs in and with belt still tensioned! – I used a standard 3/8″ ratchet – didn’t have a breaker bar.
                      Needed to have the right wheel turned all the way out – gave easy access to the 15mm bolt

                      Now this is turning from a scrapping to a recovery.

                      next up – test and/or replace the starter – and replace the themostat

                      And go from there…..(oh yea…also gotta drill out the ignition now since we can’t find the keys)

                      but it’s not seized!

                    Viewing 8 replies - 1 through 8 (of 8 total)
                    • You must be logged in to reply to this topic.
                    Loading…