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rattling/higher octane gas???

Discussion in 'Under the Hood' started by silvermelon19, December 17, 2004.

^^Searches ExplorerForum.com^^
  1. silvermelon19

    silvermelon19 Active Member

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    well lately my truck as been making what seems like a rattling noise under the hood, at first i thought it was the intake but now some one told me that the vavles rattle, so he told me to use a higher octane gas, which i was using 87, and so i put 89 in there and theres still a rattle but not as loud, Also it only does it when i hit the gas , anything???????
     
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  3. Billy177

    Billy177 Well-Known Member

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    clean the maf and reset the computer also try some seafoam
     
  4. Doug904

    Doug904 Sponsor

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    The early 4.0's were bad about wearing out Rocker arms tips and pushrods. Does it do it at idle and more so on start up? If so check with Delta Cams about a set of their remanufactored rockers with hardened tips and new pushrods...

    www.deltacam.com

    Later Doug904
     






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