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3406E vibration and very slight mis at higher rpm

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Northwinds1, Mar 11, 2013.

Page 3 of 3
  1. Mar 29, 2013 #21
    Mr. Haney

    Mr. Haney Road Train Member

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    Dec 17, 2008
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    The gauge is bad. CAT engines have pressure spikes in the fuel system that hammers the gauge over time. They then will bounce wildly. Replace the gauge, but at the same time install a good gauge snubber. If you don't install a gauge snubber the new gauges from Pete will only last about 6 months before it is doing the same thing again
     
    Mr. Haney, Mar 29, 2013
    Mr. Haney, Mar 29, 2013
    #21
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  3. Mar 30, 2013 #22
    Northwinds1

    Northwinds1 Bobtail Member

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    Mar 11, 2013
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    Well I got an accurate reading and pressure is right at specs 78idle-95max. Now the truck ran fine until on the way back from the first trip out with it. It runs smooth when cold today but develops a shake when it gets over 160degrees. Also seems noisy at #5 or 6 cylinder. Cam and rockers look good and i did another cutout test but all passed. No smoke at all. Could this be the start of another bad injector? It ran really well on the first trip until almost home. I appreciate the help.
     
    Northwinds1, Mar 30, 2013
    Northwinds1, Mar 30, 2013
    #22
  4. Mar 30, 2013 #23
    Northwinds1

    Northwinds1 Bobtail Member

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    Mar 11, 2013
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    Also what is normal operating temperature for a 3406E?
     
    Northwinds1, Mar 30, 2013
    Northwinds1, Mar 30, 2013
    #23
  5. Mar 30, 2013 #24
    little cat 500

    little cat 500 Road Train Member

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    Abbottstown PA
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    sounds like bad injetor ive had many do that after up to temp but they pass the cutout test
     
    little cat 500, Mar 30, 2013
    little cat 500, Mar 30, 2013
    #24
  7. Apr 1, 2013 #25
    Northwinds1

    Northwinds1 Bobtail Member

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    Mar 11, 2013
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    Superhauler, where is that guy out of? Would he be able to do a test on mine? Thanks
     
    Northwinds1, Apr 1, 2013
    Northwinds1, Apr 1, 2013
    #25
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