R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric Off-Road

Reply
 
Thread Tools Search this Thread
Old 08-29-2005, 08:51 AM   #1
Tech Initiate
 
wlvrn's Avatar
 
Join Date: May 2005
Location: iowa
Posts: 49
Default o.s. engine breakin

this weekend i finally got a chance to break my new o.s. 12 in. set the carb to what the book say and pulled and pulled. finally it started. it ran for about 2 mins then died. i pulled and pulled and nothing. replaced the plug and it acked like it wanted to start but after some pulling nothing. could the new plug be bad? when breaking in engines how many, if any, plugs should i go through
wlvrn is offline   Reply With Quote
Old 08-30-2005, 02:10 AM   #2
Tech Master
 
Team Duratrax's Avatar
 
Join Date: Aug 2004
Location: NSW, Albury/Wodonga
Posts: 1,674
Send a message via MSN to Team Duratrax
Default

Its a common problem. Replace the batteries in your glow ignitor and prime the engine.

Sean
Team Duratrax is offline   Reply With Quote
Old 09-03-2005, 04:02 PM   #3
Tech Initiate
 
wlvrn's Avatar
 
Join Date: May 2005
Location: iowa
Posts: 49
Default

done that. didnt work. i just got done messin with it and its not putting fuel to the carb. what is the cause for that? i took the tank out and emptied it out and i can blow threw it fine. is that good or bad?
wlvrn is offline   Reply With Quote
Old 09-03-2005, 08:12 PM   #4
Tech Master
 
Team Duratrax's Avatar
 
Join Date: Aug 2004
Location: NSW, Albury/Wodonga
Posts: 1,674
Send a message via MSN to Team Duratrax
Default

Quote:
Originally Posted by wlvrn
done that. didnt work. i just got done messin with it and its not putting fuel to the carb. what is the cause for that? i took the tank out and emptied it out and i can blow threw it fine. is that good or bad?
An engine that has lost its compression would be hard to prime but thats definetely not the case seeing that your engine is brand new.

For now blow through the lines or put a drops of fuel down the carb.

Are you blocking the exhaust and then yanking the recoil to prime the engine?

Sean
Team Duratrax is offline   Reply With Quote
Old 09-04-2005, 08:02 AM   #5
Tech Initiate
 
wlvrn's Avatar
 
Join Date: May 2005
Location: iowa
Posts: 49
Default

yes. and no fuel goes to the carb. ill try putting fuel in the carb today and see what happens. thanks TD !
wlvrn is offline   Reply With Quote
Old 09-04-2005, 10:02 AM   #6
Tech Master
 
Platinum_Racing's Avatar
 
Join Date: Jun 2005
Location: Rowley MA
Posts: 1,844
Send a message via MSN to Platinum_Racing
Default

One thing I always do when I can't prime an engine is remove the line going to the carb, then I block the exhaust and prime it. When the fuel reaches the end, I put the line back on and give it a final yank.
Platinum_Racing is offline   Reply With Quote
Old 09-04-2005, 11:33 AM   #7
Tech Elite
 
Join Date: Oct 2004
Location: Michigan
Posts: 3,319
Trader Rating: 28 (100%+)
Default

To prime my engines:
Open carb with servo electronics off
Kink off the pressure line at the tank
Flip the tank lid up and down a few times

You should be able to see the fuel go thru the lines to the carb assuming you're using clear line.

You may have to lean the hsn a bit if it's to blubbery even to break in. You're elevation and air density may be different from the place where os wrote their manuals.
jbrow1 is offline   Reply With Quote
Old 09-05-2005, 09:36 AM   #8
Tech Initiate
 
wlvrn's Avatar
 
Join Date: May 2005
Location: iowa
Posts: 49
Default

thanks guys. i took it out yesterday and put some fuel in the carb and it pulled over soooo hard. i took the plug out and pulled and it pulled easy. put the plug back in and pulled. my god did it pull hard. its on my work bench now waiting to get tore apart. what could make it pull so hard?? when i pull the starter its like it has super compresion or something.
wlvrn is offline   Reply With Quote
Old 09-05-2005, 11:25 AM   #9
Tech Addict
 
losi jon's Avatar
 
Join Date: Mar 2003
Location: california
Posts: 648
Default

sounds like you are flooding it.....take the glow plug out and turn the engine over a few pulls...try leaning out the low end a little to get it started,then once you do you can richen it back up for break in.
losi jon is offline   Reply With Quote
Old 09-06-2005, 06:54 AM   #10
Tech Initiate
 
wlvrn's Avatar
 
Join Date: May 2005
Location: iowa
Posts: 49
Default

so beings that its pulling so hard and without the plug pulling easy means its fludded?
wlvrn is offline   Reply With Quote
Old 09-07-2005, 06:48 AM   #11
Tech Adept
 
Join Date: Nov 2004
Location: melbourne
Posts: 204
Trader Rating: 1 (100%+)
Default

thats sad that you know so little
plug out means no seal obviously makes it easy to pull
my suggestion for lack of priming carb possition try paying with the carby open or closed while priming should prime best with it closed

are obviously over priming if it gets to hard to put take the plug out hold the truck upside down and turn the enigne onver a few times to empty it then reprime

dont keep pulling it when it floods you will kill your OWB or pullstart
just get clear fuel like and when the fuel is close to the carby give it 2 more priming pulls then try to start it
merc-blue is offline   Reply With Quote
Old 09-07-2005, 07:42 AM   #12
Tech Master
 
Team Duratrax's Avatar
 
Join Date: Aug 2004
Location: NSW, Albury/Wodonga
Posts: 1,674
Send a message via MSN to Team Duratrax
Default

That was hard to understand but i think i know what you are talking about.

wlvrn - These 2 sites will help you out a lot.

http://www.rcnitro.com/rn/articles/index.asp
http://www.rccaraction.com/rc/articles/index.asp

Sean
Team Duratrax is offline   Reply With Quote
Old 09-07-2005, 09:39 AM   #13
Tech Initiate
 
wlvrn's Avatar
 
Join Date: May 2005
Location: iowa
Posts: 49
Default

thanks td
wlvrn is offline   Reply With Quote
Old 09-07-2005, 09:52 AM   #14
Tech Elite
 
Join Date: Oct 2004
Location: Michigan
Posts: 3,319
Trader Rating: 28 (100%+)
Default

I find it easier to prime with the carb fully open. I guess it's a matter of opinion.
jbrow1 is offline   Reply With Quote
Old 09-08-2005, 09:56 AM   #15
Tech Apprentice
 
Aphinity's Avatar
 
Join Date: Aug 2005
Location: N Vancouver, BC
Posts: 81
Send a message via ICQ to Aphinity Send a message via AIM to Aphinity Send a message via Yahoo to Aphinity Send a message via Skype™ to Aphinity
Default

You might want to find someone with a starter box to give you a little help through this stage. I always found pull starts to be very finicky, and without nearly ideal settings, you'll always have trouble starting it. Once it's broken in and tuned, you should be able to go back without trouble.
Aphinity is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tungsten Disulfide engine pre breakin Lubricant Relay8039 Onroad Nitro Engine Zone 14 12-28-2010 09:50 AM
Engine Breakin Bench bboy Onroad Nitro Engine Zone 1 09-05-2008 10:14 PM
HUDY Engine Breakin Stand NEW For sale ericsp2 R/C Items: For Sale/Trade 0 09-11-2007 12:01 PM
BREAKIN IN A XXX NT HELP LOWGEARED Nitro On-Road 8 02-10-2007 10:25 PM
Cold Weather Engine Breakin, need advice Cain Electric Off-Road 2 11-14-2006 04:47 PM



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 12:32 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net