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Thread: strange engine noise
          
   
   

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  1. #1
    oldways is offline CHR Member Visit my Photo Gallery
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    Question strange engine noise

     



    its a small block 327 the noise sounds like a badly adjusted valve this is what i have done so far adjusted the valves over and over (hydraulic) then i fitted a new cam, cam followers, push rods, then adjusted again still the noise is there.... could it be the push rod on the mecanical fuel pump.. and oh yes the oil presure is good.. about to go crazy want to ride my rod but what if?

  2. #2
    fun4me is offline CHR Member Visit my Photo Gallery
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    Does the noise change while you are adjusting the valves or does it sound different on one particular rocker arm?

  3. #3
    oldways is offline CHR Member Visit my Photo Gallery
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    I adjust the rockers when the engine is cold

  4. #4
    fun4me is offline CHR Member Visit my Photo Gallery
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    Does the noise go away for a few minutes after you adjust the valves?

  5. #5
    oldways is offline CHR Member Visit my Photo Gallery
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    the noise stays no matter what I do

  6. #6
    fun4me is offline CHR Member Visit my Photo Gallery
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    I was thinking maybe you had a rocker stud coming loose loose. Have you tried to isolate the noise with stethscope?

  7. #7
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    techinspector1 is offline CHR Member Visit my Photo Gallery
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    A header leak or cracked flexplate will emit noises that sound like mechanical problems inside the motor.

  8. #8
    oldways is offline CHR Member Visit my Photo Gallery
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    i have not tried either of these possibility let me get to it and post my finding in a day or so thanx for your help

  9. #9
    jerry clayton's Avatar
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    short out one cylinder at a time to see if the sound changes---if it goes away with any plug shorted you probably have a bad rod bearing or wrist pin/piston

  10. #10
    oldways is offline CHR Member Visit my Photo Gallery
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    thank you all for your help im gona get on it during the week and will post my findings

  11. #11
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    From what I read in your first post I'd be looking at a collapsed lifter.
    Ken Thomas
    NoT FaDe AwaY and the music didn't die
    The simplest road is usually the last one sought
    Wild Willie & AA/FA's The greatest show in drag racing

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