Notices
ZDZ & RCS Support Direct support from Mike Dooley of RC Showcase for all your ZDZ and RCS Engine questions.

ZDZ 80 mid-throttle miss.

Old 05-22-2010, 08:13 PM
  #1  
RCdude13
Thread Starter
My Feedback: (6)
 
Join Date: Sep 2005
Location: KincardineOntario, CANADA
Posts: 270
Likes: 0
Received 0 Likes on 0 Posts
Default ZDZ 80 mid-throttle miss.

My ZDZ80 runs like a champ, but every once in a while it makes a missing sound at mid throttle, while in flight. It is not a cough, but rather a burp. Would this be a slightly rich mid range needle valve setting? It starts beautifully, and never quits but I hate this little miss which happens about a dozen times a flight. Any ideas?
Old 05-22-2010, 09:53 PM
  #2  
Ram-bro
My Feedback: (101)
 
Join Date: Jan 2002
Location: Bennington, NE
Posts: 5,804
Received 0 Likes on 0 Posts
Default RE: ZDZ 80 mid-throttle miss.

I dont have an answer for you but could you tell me your starting sequence?
Old 05-23-2010, 09:55 AM
  #3  
Zeeb
My Feedback: (41)
 
Zeeb's Avatar
 
Join Date: Nov 2004
Location: St George, Utah UT
Posts: 5,246
Received 12 Likes on 11 Posts
Default RE: ZDZ 80 mid-throttle miss.

Well the first thing is that although this is listed as a support forum, no one from TBM monitors or answers questions here so you won't get much feedback except for other users.

First thing is always double checking your needle settings especially if the engine is relatively new and breaking in as it will require less fuel as it loosens up and if you don't lean things out a bit, it'll exhibit symptoms of being rich.

Next place especially if it's a bit older or this problem developed recently or over a short period of time, is to look at your sparkplug and make sure it's in good shape or replace it with a new one. I find that setting the plug gap at .018-.020 works better than what is suggested in the manual. Also verify the condition of the ignition battery, wiring and switch in the ignition system.
Old 05-23-2010, 05:04 PM
  #4  
MetallicaJunkie
 
MetallicaJunkie's Avatar
 
Join Date: Sep 2006
Location: Donna, TX
Posts: 5,461
Received 1 Like on 1 Post
Default RE: ZDZ 80 mid-throttle miss.

lean the low end an 1/8th of a turn

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.