R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road > Onroad Nitro Engine Zone

Thread Tools Search this Thread
Old 10-09-2010, 11:49 AM   #1
Tech Rookie
Join Date: Mar 2010
Posts: 8
Default Need help. Cannot start os engine

Os tz spec ii
I just got a used os tz spec 2 from ebay.
No luck.. I can't start the engine.

I suspect my needle setting is incorrect.
Pls advise the default needles setting. So that I can get a starting pt.


Last edited by R003; 10-09-2010 at 11:50 AM. Reason: Wrong title
R003 is offline   Reply With Quote
Old 10-09-2010, 12:09 PM   #2
Tech Regular
Join Date: Mar 2010
Location: southeastern ohio
Posts: 375
Trader Rating: 11 (100%+)

Here is the best I could find on it.

High Speed Needle (HSN) 2 turns out from closed.

Low Speed Needle (LSN) close it fully (with carb open, so as not to damage the main jet), teh open it until it is flush with the slide body.

Main Jet Needle or Valve (MRN) has to be flush with carburator body, and leave it there and never touch it again.

Idle Speed Needle (ISN), close it until slide valve is open about 1mm, and then when engine has started and warmed enough readjust to a slow steady idle.
bevofrancis is offline   Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
"the tuning bible" houston Onroad Nitro Engine Zone 308 08-06-2016 04:30 PM
Hobao Fan Thread ket2175 Singapore R/C Racers 209 01-19-2009 06:58 AM
Please Help Muah! Speedjunkyz Nitro On-Road 36 09-05-2008 07:13 AM
Need a V-spec expert! Jaz240 Nitro Off-Road 27 08-14-2008 12:09 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are On
Pingbacks are On
Refbacks are Off

All times are GMT -7. It is currently 04:49 AM.

Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net

SEO by vBSEO 3.5.0