2ws cat ticking

Discussion in 'Trucks [ Eighteen Wheelers ]' started by 379CAT, Nov 8, 2009.

  1. Nov 8, 2009 #1
    379CAT

    379CAT Light Load Member

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    Feb 10, 2009
    springdale wa
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    my brother has 2000 550 cat. it ran fine till the overhead was set, then it started ticking . they rechecked the overhead could not find anyting, then took it to cat they went over it, noting out of spec. they said maybe its an injector so he changed all of them. it was still ticking. then i checked it, it was all in spec. he ran it 70,000 mile the ticking almost all went away, this week he had the overhead reset at cat guess whats back, thats right its ticking again. the cat guys can hear it but cant find it. any ideas???:biggrin_25510:
     
    Last edited: Nov 9, 2009
    379CAT, Nov 8, 2009
    379CAT, Nov 8, 2009
    #1
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  3. Nov 8, 2009 #2
    DDS

    DDS Medium Load Member

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    May 20, 2008
    Toronto
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    If you are sure the valves a adjusted properly (the jake brake slave was backed off when the exhuast valve was adjusted), You may have a valve sucked up in to the seat. Look at number one intake valves. For some reason number one intake has been the common one.Have seen this a few times, took a few times to convince Cat to let me pull the head, at that time 2WS was still under ESC warranty.
     
    Last edited: Nov 8, 2009
    DDS, Nov 8, 2009
    DDS, Nov 8, 2009
    #2
  4. Nov 9, 2009 #3
    379CAT

    379CAT Light Load Member

    114
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    Feb 10, 2009
    springdale wa
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    thanks DDS why would is start ticking after an adjustment? would you notice the valve getting tight if it was sucking it in?
     
    379CAT, Nov 9, 2009
    379CAT, Nov 9, 2009
    #3
  5. Nov 9, 2009 #4
    Jas

    Jas Medium Load Member

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    Dec 13, 2008
    Eastern Sea board, Australia
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    Not backing the jakes off is the most common cause of ticking noise after a valve set, seen it may times. Exhaust mainfold leak will give a ticking noise too, but it wouldn't come and go with vavle adjustment though.

    I've seen a fair few valves pulled up into the head on 6NZs, some so bad the rockers run out of adjustment.
     
    Jas, Nov 9, 2009
    Jas, Nov 9, 2009
    #4
  7. Nov 11, 2009 #5
    Brickhauler

    Brickhauler Medium Load Member

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    Oct 1, 2008
    Elizabeth CO
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    My buddy has a 5EK and his ticking was a broken valve spring.
     
    Brickhauler, Nov 11, 2009
    Brickhauler, Nov 11, 2009
    #5
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