Results 1 to 7 of 7

Thread: VW Engine Hiccup

  1. #1
    N747VG's Avatar
    Join Date
    Feb 2024
    Location
    Nashville
    Posts
    3

    VW Engine Hiccup

    Hello Everyone.

    Had an issue arise with my sonerai today.

    If i throttle up too quickly the engine will hiccup for a second and then keep running fine. Seems like it may be starved of fuel for just a second. i'm hoping it's just a fuel filter which i'm going to change tomorrow but has anyone had a similar issue.
    I had the thought that it might be running to lean. There's no mixture adjustment in the cockpit.

    Thank you.

  2. #2
    Dana's Avatar
    Join Date
    Jul 2011
    Posts
    936
    If it runs fine at full throttle it's unlikely to be the fuel filter. Look at the accelerator pump, if you have one... what kind of carburetor is it?

  3. #3
    N747VG's Avatar
    Join Date
    Feb 2024
    Location
    Nashville
    Posts
    3
    Quote Originally Posted by Dana View Post
    If it runs fine at full throttle it's unlikely to be the fuel filter. Look at the accelerator pump, if you have one... what kind of carburetor is it?
    No accelerator pump. Itís a revmaster revflow carb


    Sent from my iPhone using Tapatalk

  4. #4
    Dana's Avatar
    Join Date
    Jul 2011
    Posts
    936
    It didn't do it before?

  5. #5
    N747VG's Avatar
    Join Date
    Feb 2024
    Location
    Nashville
    Posts
    3
    Quote Originally Posted by Dana View Post
    It didn't do it before?
    No. I worked on it today and it seemed to run a lot better.


    Sent from my iPhone using Tapatalk

  6. #6

    Join Date
    May 2023
    Posts
    11
    Without an accelerator pump that response, at least to me, would not be unexpected.

    I was taught to slowly roll the throttle on and off.

    It may be different with various OATs or whether the engine is completely warmed up or not.

  7. #7

    Join Date
    Sep 2011
    Posts
    65
    The Revmaster Revflow "carb" is not a carburetor, it's a Throttle Body Injection. A poor-mans fuel injection. No floats, no float bowl, no jets, etc. A good solid unit, little to go wrong. But it does have the idiosyncrasy you mention. Can't jam that throttle from idle; once flying, you can. Like any small passage for fuel, some cleaner now and then is helpful, especially if the fuel has been sitting for awhile.

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •