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Thread: Rattle on Startup

  1. #1
    Registered User
    Name: Phil


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    Rattle on Startup

    Hello All,

    I am looking for some clarity on the rattle on first startup ( morning). I have been doing some research and a lot of the information pertains to the 5.4 3V Triton engines. When searching on here, people are referring to it as piston slap. However, when you listening to the symptoms it seems like it is right inline with the V3 timing chain issue.
    So, do our engines suffer from the same issue: Chain, tensioner, guides

    If so, how different, if any, is our setup with the 2V 5.4 Supercharger compared to the Triton 3V.

    Are there any tutorials explaining the change out process or do we just follow the same proceedure that is allover youtube.

    Seems as if on startup there is a rattle that last about 3 sec or less. I am suspecting that it is the tensioner that is loosing prime and will need to be changed. Also, while in there what is woul dbe good to change, looks like water pump, and thermostat is easly accessable, so why not change it?

    Thanks for any information in advance that can be provided.

  2. #2
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    Name: Kevin

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    it's the timing chain tensioner and guides.

    I changed mine at 104k, and the rattle started to come back around 125k.

    The process on replacement is the same for any 2v 4.6l or 2v 5.4l, except there's more junk in the way for the supercharger/bridge/pulleys/tensioners hanging off the front.
    2002 DSG HD #09617 NHTOC Truck of the month November 2012
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  3. #3
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    Name: Phil


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    Thanks for the reply.

    You indicated it came back after 21K miles. Did you use OEM parts? What did you find was the problem, tensioner?

    Also, videos on the web only talk about 3V, is the process the same for our trucks?

    Thanks

  4. #4
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    Name: Kevin

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    I used OE parts, not OEM. Thereís a big difference. Modular motorsports racing (mmr) sells some upgraded billet guides now that might last longer but Iíve not used them.

    OE parts are original equipment. That company made that exact part the factory installed for the car originally.

    OEM are original equipment manufacturers and that means that the company that made the OE seatbelt could then sell you an OEM timing chain.

    The process is the same, look for videos of doing crown Victoriaís or other 2v engines if you want a video to watch. All the 4.6 and 5.4 2v engine layouts are basically the same. The 3v engine is a revised platform but basically the same.

    On my truck the tensioner guides looked to be the original problem but I installed new everything even chains. My truck has 160k now and it will rattle for a split second at a cold start. Itís not worth it to me to do the work again if it came back so fast until it gets far worse.


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  5. #5
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    Name: Keith

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    Make sure you replace the chain tensioners with the metal ones, not the plastic.Also, use OEM, timing components, don't ask me how I know. LOL.

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