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  1. #1
    RC poster
    Join Date
    Feb 2015
    Posts
    3

    Revo 3.3 idle, high rev after start

    Hey im having idle issues with my 3.3 and i havn't even gone through two gallons. At this point i have the trx 3.3 out and ready for dissassembly. The issue im having is odd because no matter what adjustments i make to the hsn and lsn, the truck eventually just revs up so much it wants to get moving on its own with no input from my radio what so ever. Is there something i'm doing incorrectly? I payed 600 for this truck and i would like to know why this is happening. Please help! Thank you
    Last edited by DOM321; 02-12-2015 at 08:14 PM.

  2. #2
    RC Racer
    Join Date
    Aug 2013
    Location
    Monee, IL
    Posts
    208
    I would set it back to factory settings and start from there. Once you get it tuned, it should stay fairly there, but the 3.3 carb can be very finicky.

    Also, check your idle linkage. You may have to undo the small setscrew and move the collar back just a hair, unless you can use your trim on your TX to get it to stay still.

    When I had my revo, it would hold a tune really well. My T-Maxx, however would do just what you are describing almost every time I started it up. Finally gave up and went brushless. I do miss nitro at times, but my neighbors don't!

  3. #3
    RC poster
    Join Date
    Feb 2015
    Posts
    3
    Haha ok ill try those things, thank you for the help its much appreciated

  4. #4
    RC Qualifier
    Join Date
    Mar 2013
    Location
    New Hampshire
    Posts
    755
    Have you checked the idle screw?
    And we thought toy grade RC's where cool...

  5. #5
    RC poster
    Join Date
    Feb 2015
    Posts
    3
    Which one is that?

  6. #6
    RC Competitor
    Join Date
    Nov 2014
    Posts
    77
    this is the idle screw

  7. #7
    RC Turnbuckle Jr. Wildman4910's Avatar
    Join Date
    Jun 2009
    Location
    Cocoa Florida
    Posts
    4,861
    Quote Originally Posted by mcp123 View Post
    this is the idle screw
    That is the Idle Gap Screw, used to set the idle gap, 1mm is a good place to start at, most end up between .94-1mm.
    You can set the Idle Gap with a #60/61 sized drill bit shank or a medium sized paper clip.
    Set it and leave it be afterward, you adjust the idle speed by the LSN.

    It should look about like this,


    Look out for the tree/crunch!

    LiPo? Naw NITRO!!

  8. #8
    RC Enthusiast
    Join Date
    Sep 2013
    Posts
    46
    Get a losi 3.4 carb, soooo much better!

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