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  1. #1

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    Wierd sound from engine?

    Okay ive had my nitro rs4 3 evo + for about 4 months now. I did the break in process i ran it through 4-5 tanks in figure 8s and 2 in idle. It makes wierd rattling noise from the engine i dunno if its normal or something is wrong. Any input will be appreciated thanks.

  2. #2

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    RE: Wierd sound from engine?

    Well i am also suffering from the same problem and want some useful information about this problem. Visited lots of cars for sale forum

  3. #3

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    RE: Wierd sound from engine?

    Did you fix the problem in the end? BTW I love the rs4 3 evo, remember watching a YouTube video vs the Evo RTR

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  4. #4

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    RE: Wierd sound from engine?

    Yea I eventually found out that it was a normal rattling noise. Also my exhaust manifold was loose so I tightened it and put a new gasket in and it stopped.

  5. #5

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    RE: Wierd sound from engine?

    What does it sound like?

  6. #6

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    RE: Wierd sound from engine?



    Like metal scraping metal lol it sounds like the piston scraping the cylinder head




  7. #7

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    RE: Wierd sound from engine?

    me and my friend both have evo's, and his makes that sound, but mine doesn't... his exhaust header actually came loose out of nowhere, so i tightened it down... maybe its an air leak from the gasket? i'll replace his and see if its still making the sound, i have one laying around anyways.

  8. #8

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    RE: Wierd sound from engine?

    If it sounds like little bells in your motor its the bearing went out and its bouncing inside your motor

  9. #9

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    RE: Wierd sound from engine?

    What bearing and how do I replace it?

  10. #10

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    RE: Wierd sound from engine?

    Inner bearing behind the shaft

  11. #11

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    RE: Wierd sound from engine?

    alright so its the bearing before the flywheel?

  12. #12
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    RE: Wierd sound from engine?

    Just a thought, but have you checked your gear mesh?
    Mugen MBX6R, HB D8T, Losi 8 2.0, Savage X 4.6, Losi 810, Hyper 7, Exceed Forza
    http://www.youtube.com/user/NitroRCNerds

  13. #13

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    RE: Wierd sound from engine?

    No. There's one more behind the that one. They are like one cm apart.

  14. #14

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    RE: Wierd sound from engine?

    Do you have aluminum clutch shoes? If you do have the little bell sound could be coming from your clutch shoes. A shoe could be lightly engaging, you could have a broken/lose/weak clutch shoe spring. Check out the clutch before you'll have to take your entire engine apart to see if sound could be coming from your engine.

    Here's one way to check if its your engine. Remove the glow plug, try and spin your flywheel either direction till you can see the piston and try to see for any dings/dots/crator damages over the top of the piston.

  15. #15

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    RE: Wierd sound from engine?



    The piston has no craters or scrapes.


  16. #16

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    RE: Wierd sound from engine?

    Possibly your clutch shoes

  17. #17

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    RE: Wierd sound from engine?


    ORIGINAL: rx7devil210

    Yea I eventually found out that it was a normal rattling noise. Also my exhaust manifold was loose so I tightened it and put a new gasket in and it stopped.
    Nice one glad you fixed it in the end



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