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Thread: Engine noise

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    Engine noise

    I have 2002 with a problem a can't pinpoint. Theres a noise that sounds like an exhaust leak while i accelerate. I tried lifting the rear wheels and accelarated while checking out the engine bay, but can't seem to find the problem. After i crashed and rebuilt the truck, i noticed a broken bolt on one of the headers. I swapped the headers to long tubes but that didn't seem to be it. The headers were the last of the exhaust to be replaced, i have new tubes, headers and cats. Any ideas. Sound seems to be coming from the drivers side
    OBJECTS IN MIRROR ARE LOOSING

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    I had the same noise in my old 03 and also have it in my current 03. Both trucks were under 30K miles. Haven't figured it out yet, but it's on the drivers side.

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    I have a noise sounds like a hum I hit the gas It stop at 1800 rpm here come the noise it goes away at 800 or 900 rpm anyone had this problem

    Sent from my SAMSUNG-SM-G900A using Tapatalk

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    Quote Originally Posted by GRANTBP View Post
    I have a noise sounds like a hum I hit the gas It stop at 1800 rpm here come the noise it goes away at 800 or 900 rpm anyone had this problem

    Sent from my SAMSUNG-SM-G900A using Tapatalk
    The noise sounds like sucking air from a it only make the idling down from 1700 rpm the stops at 900 rpm anyone know what it could be thanks for your help

    Sent from my SAMSUNG-SM-G935A using Tapatalk

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    Plug getting ready to blow out

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    Quote Originally Posted by GRANTBP View Post
    The noise sounds like sucking air from a it only make the idling down from 1700 rpm the stops at 900 rpm anyone know what it could be thanks for your help

    Sent from my SAMSUNG-SM-G935A using Tapatalk
    check your belt tensioner, my was making a sound that I swore was a vacuum leak, but bearing was going bad allowing the pulley to rub on the bracket

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    Quote Originally Posted by BRIANV View Post
    Plug getting ready to blow out
    Will check them

    Sent from my SAMSUNG-SM-G935A using Tapatalk

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    Quote Originally Posted by ZIPP View Post
    check your belt tensioner, my was making a sound that I swore was a vacuum leak, but bearing was going bad allowing the pulley to rub on the bracket
    Ok I will replace all of them

    Sent from my SAMSUNG-SM-G935A using Tapatalk

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    Plugs getting ready to blow out will make a ticking noise. You can hear the plugs igniting. But still, never a bad idea to make sure their torqued properly.

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    Quote Originally Posted by SonicHD View Post
    Plugs getting ready to blow out will make a ticking noise. You can hear the plugs igniting. But still, never a bad idea to make sure their torqued properly.
    I've had two 03 HD's with the exact same ticking noise - plugs were fine. The noise comes from the drivers side (at least that is where I hear it from). Sounds like a leaky collector or super loud injectors. Don't see any soot so I don't think it's an exhaust leak. However, wish I could simulate load on a lift to track it down.

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    Hmmm loose lifter perhaps? Thought that would be odd to have on two trucks.

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    These are automatic hydraulic lifters right?

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    Best guess is something to do with the exhaust manifold.

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    I had a "ticking" under light load 1k-2k rpms turned out to be the front drivers side cat brick was lose in the housing. Replaced the front and rear cats sounds like new!
    Last edited by SoCal Waite; 06-21-2017 at 05:28 PM.

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    BRIANV (06-22-2017)

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    So many possibilities haha

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