[MR2] Ongoing problem, will not start, mk2T, 3rd gen-UPDATE

[Donald Chalfant]

  I've had broken rods and pistons bind things up but never a silent one. If there is any movement possible (I've have frozen solid too but only in motorcycles) Always some clanking or grinding sounds accompanied with a little movement. You do have to tell all your chattering friends standing on the sideline to shut up. 

  Take my comments a little as a grain of salt because I'm not as
  mechanically inclined as I'd like, but this is scaring me as I envision him
  turning the crank until the shaft itself hits a broken rod which has
  dropped to the bottom of the cylinder...I hope I'm wrong!!

  -wayne
  '91 Turbo T




   

  On Tue, 13 Apr 2010 10:00:47 -0500 (CDT), Kurt Krueger
  <telek2 at verizon.net>
  wrote:
  > Apr 13, 2010 07:37:03 AM, chrissul at comporium.net wrote:
  > 
  >>
  >>removed the alternator belt, alternator spins freely.  Cannot turn the
  >>crank
  >>
  >>by hand clockwise, can turn counterclockwise about 1/2 a turn(180
  >>degrees)
  >>maybe..not quite that much.  it also emits a squeak when I do that.  Can

  >>then turn back to the original position.  I cannot turn it very far in 
  >>either direction, honestly.  180 degrees is probably optimistic.
  >>
  >>like I said, car ran PERFECTLY FINE, has oil (1500 miles, mobil 1 every 
  >>3000-3500 miles), coolant, etc.   until the morning it fired and died.
  >>
  >>Car is out of gear, plugs are out,
  >>
  >>So what should I do next?
  > 
  > Not likely anything dropped into A cylinder.  If a piston was hitting
  > something, you'd
  > have about 360 degrees of rotation back and forth.  To get only 180 it
  > would have
  > to involve two cylinders.
  > 
  > I take it you don't get any metallic sounding clunk when it hits the end
  > of travel.
  > If something was being hit internally, you might be able to hear it when
  it
  > makes contact and get a clue what/where it is.
  > 
  > Water pump uses a centrifugal impeller.  It's not likely to have a
  definite
  > range of motion like you experience.  Oil pumps use gears to move
  > oil (at least most do).  A broken tooth could behave like you observe.
  > 
  > If it were my engine, I'd continue like you did with the alternator. 
  > Start eliminating
  > things that turn.  Anything else turned by a belt, then distributor,
  then
  > remove
  > the timing covers and deal with the timing belt (3rd gen does have a
  > timing belt,
  > right?).
  > 
  > I hope you find something.  If you do all the above an it still won't
  > turn, you've got
  > something internal to the engine.  Like a thrown rod.
  > 
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