Echo PB-500t engine seized

Discussion in 'Mechanic and Repair' started by jlbf0786, Nov 18, 2013.

  1. jlbf0786

    jlbf0786 LawnSite Senior Member
    Male, from Charlotte, NC
    Posts: 521

    For about 10 minutes..

    I cleaned out all of the Penetrating Oil and Parts Blaster that I'd sprayed into the cylinder and then put maybe 2 cap fulls of 2-cycle oil into the cylinder; it sat for maybe 3 hrs. I just went out and figured I'd give it a pull (not expecting any change) and it turned over quite easy.

    I mixed up some new fuel and it fired right up in a few pulls. I had it running at full throttle for over 10 mins (it was rolling out smoke, of course)

    After 10 mins of running strong the engine just died and I have had no luck getting it started up again.

    .. any ideas ?
     
  2. themadcutter

    themadcutter LawnSite Senior Member
    from florida
    Posts: 914

    All the oil was creating the extra compression. You basically did the wrong thing. I know some one posted to just run it and hope for the best but the cylinder was damaged and is now probably damaged more. If it seazed up it was seazed for a reason. more than likely the piston was stuck to the cylinder due to melted aluminum. by running it, with the extra oil (there was still oil in the crank pan) providing some added compression the now bad piston wore the cylinder down even more. OR maybe a piece of ring was gouging the cylinder some and completed the job

    its all speculation but probably close to what happened.

    if your super lucky it may still besaved with a new piston
     
  3. Landrus2

    Landrus2 LawnSite Platinum Member
    Posts: 4,811

    You lucky it lasted 10 minutes
     
  4. themadcutter

    themadcutter LawnSite Senior Member
    from florida
    Posts: 914

    I'm betting that was an estimate and may be a little off
     
  5. jlbf0786

    jlbf0786 LawnSite Senior Member
    Male, from Charlotte, NC
    Posts: 521

    Oh well.

    It is what it is; at least I got 10 minutes of fun from it.

    I know you're correct in saying it probably done more damage by running it, the oil I'd added to the cylinder just gave it the compression it needed to start up.
    I'm definitely not going to put a new piston and ring set in it.. the parts for this model (cylinder/piston/rings) are over $200 alone. ridiculous
     
  6. themadcutter

    themadcutter LawnSite Senior Member
    from florida
    Posts: 914

    I sent you a pm.
     
  7. tigerepairdotcom

    tigerepairdotcom LawnSite Senior Member
    Posts: 324

    Did you even read my posts Flex hone fingernail scratch test and piston and rings with pin under $60? You even said you were gonna open it up and inspect/repair it. Hope this is a lesson for people that try to run a machine with scored cylinders and to not even think about doing it.

    http://www.ereplacementparts.com/ech...045_35104.html

    D-5 P021014973
    Piston Kit
    Piston Kit
    Note: Includes figures 6-10
    In stock
    1 available
    $53.55
     
  8. themadcutter

    themadcutter LawnSite Senior Member
    from florida
    Posts: 914

    He may have read your post but the other post I quoted from the same thread probably sounded so easy he had to try it. the funny thing is that just un seizing it and running it will work for a short time. Maybe for days but those worn out parts will always finish the job of ruining the cylinder
     
  9. jlbf0786

    jlbf0786 LawnSite Senior Member
    Male, from Charlotte, NC
    Posts: 521

    I ordered a new piston kit for $46+tax from the Echo dealer here in Charlotte. I couldn't even find it that cheap anywhere online so I figured i'd go ahead and pull the trigger since the cylinder isn't scored.
     
  10. tigerepairdotcom

    tigerepairdotcom LawnSite Senior Member
    Posts: 324

    U sure its not scored? What caused the failure? also did you run a flex hone?
     

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