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  1. #1
    thompsdw's Avatar
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    Ticking Noise when First Started after Fresh Rebuild

    Hey guys. Just finished rebuilding my 155hp (NA) GTX. This is my 3rd rebuild, so Im not a newbie - but .................

    New timing chain, new tensioner assembly, new bearings in engine, professionally rebuilt head. No mods on this other than an aftermarket K&N air filter. So here is the issue:

    The first time I ran it on the hose I noticed a strange noise from the head that went away in seconds. I thought, huh ? I've never heard the noise after a rebuild. Let it sit another week or so and was going to take it out today. Today the noise is like a ticking sound that again goes away in seconds (~5 secs) . Coming from the head area of the ski. I thought, huh ? Went and gassed it up and decided to run it on the hose for a couple minutes (much longest duration yet). So, this is 20 minutes later. Ticking noise for much shorter time (2 secs).

    Obviously it is going away with oil or oil pressure. I wondering about the chain tensioner and chain slap. I'm inclined to pull the head cover and take a look before I run it any more. Other ideas?


  2. #2
    speedskixp's Avatar
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    Lifters bleeding down. I wouldnt sweat it.

  3. #3
    dnielsen's Avatar
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    Pull the valve cover, clamp the throttle, give it a spin and see if it is the tensioner.

  4. #4
    thompsdw's Avatar
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    Quote Originally Posted by speedskixp View Post
    Lifters bleeding down. I wouldnt sweat it.
    I thought the same thing, but I have never heard lifter noise on these engines before. Could it have anything to do with the shop head rebuild? BTW - it was running a little rough as well. Gas is good.

  5. #5
    speedskixp's Avatar
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    I've heard it on a few 4 tec motors mostly after they have sat for a while.

  6. #6
    thompsdw's Avatar
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    This ones freshly rebuilt. Professionally rebuilt head. I'm puzzled?

  7. #7
    shiftarno's Avatar
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    Def a lifter making the noise

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