R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 05-09-2014, 01:24 PM   #1
Tech Apprentice
 
Join Date: Apr 2014
Location: Ireland,Poland
Posts: 51
Default New engine has came, now what...

Hi yesterday I got my Nova plus s4/ps, today I for the first time I wanted to turn it on and break it in. I pre-heated it up and tried to start but a failed the starterbox(fully charged battery) would not turn it over and when i pulled the pull start couple of times it got stock and would not rewind by itself so i took the engine out of the car and rewind it by myself.
I started to heat it back again but I failed again when i was priming warm engine the fuel would just revers its way back
tried more and more ( I have started couple of times but it straight staled ) And then engine temps were low again
So I again started to heat it up but could not get up to 200F because of dead 12v battery in starter box , the competition heat was wired up to that.
I have let it cool down in the house and gave it after run oil.
Tomorrow I will try to fire it up, Wish me best.

And nearly Forgot I have questions :Why when I prime hot engine the fuel
comes back? how can it be solved?
Any ideas on how to start it more easy ?
Is it ok for the engine to stay one-two days between break in?
Thanks for answers
Mr.NitroBurner is offline   Reply With Quote
Old 05-09-2014, 01:43 PM   #2
Tech Elite
 
Join Date: Apr 2007
Location: The Aloha state
Posts: 3,042
Trader Rating: 125 (100%+)
Default

crack the glow plug loose to start. after you start it, then tighten it back up. Make sure it is not flooded with fuel and hydrolocking. loosening the glow plug will relieve it some and granted, the engine is up to temp at start up, it should turn over easily.
__________________
----Answer RC-USA----Stickit1 Racing----PT Racing Hawaii----808-RC----702 Raceway-----Dialed RC-----
Neesh is offline   Reply With Quote
Old 05-09-2014, 01:44 PM   #3
Tech Master
 
Jaymancd's Avatar
 
Join Date: Jul 2013
Location: in my house
Posts: 1,366
Trader Rating: 4 (100%+)
Default

Do you have a filter in your fuel line somewhere?
__________________
-Taking a temporary vacation from R/C-
Team Holy Rollers--Team Bendy
If you hear my shot, you weren't the target.
Jaymancd is offline   Reply With Quote
Old 05-09-2014, 02:12 PM   #4
Tech Apprentice
 
Join Date: Apr 2014
Location: Ireland,Poland
Posts: 51
Default

Quote:
Originally Posted by Jaymancd View Post
Do you have a filter in your fuel line somewhere?
Yes I do have a fuel filter
Mr.NitroBurner is offline   Reply With Quote
Old 05-09-2014, 02:56 PM   #5
Tech Master
 
Jaymancd's Avatar
 
Join Date: Jul 2013
Location: in my house
Posts: 1,366
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by Mr.NitroBurner View Post
Yes I do have a fuel filter
Usually (at least when I have done this) when there is no filter the fuel does whatever it wants in the lines, but with the filter that helps hold it there. I am not sure but it could be to large of fuel line(if there are different sizes). just a thought
__________________
-Taking a temporary vacation from R/C-
Team Holy Rollers--Team Bendy
If you hear my shot, you weren't the target.
Jaymancd is offline   Reply With Quote
Old 05-09-2014, 04:09 PM   #6
Tech Lord
 
Jaz240's Avatar
R/C Tech Elite Subscriber
 
Join Date: Aug 2008
Location: Dwindle city
Posts: 12,494
Trader Rating: 52 (100%+)
Default

If your engine and carb are severely overheated it will vaporize the fuel entering your carb and create back pressure so new fuel cannot flow into the carb. Does this problem with fuel back flowing happen when the engine and carb are cold? Are you applying to much heat to engine and carb?
__________________
nothing to see here................................
Jaz240 is offline   Reply With Quote
Old 05-10-2014, 01:00 AM   #7
Tech Apprentice
 
Join Date: Apr 2014
Location: Ireland,Poland
Posts: 51
Default

Quote:
Originally Posted by Jaz240 View Post
If your engine and carb are severely overheated it will vaporize the fuel entering your carb and create back pressure so new fuel cannot flow into the carb. Does this problem with fuel back flowing happen when the engine and carb are cold? Are you applying to much heat to engine and carb?
Hi with my old engine when it was cold i never had fuel coming back from the carb problem.
But how do i pervent the carb from heating up if i need to preheat my engine for break in, and i am using hair drayer to hit the 200f?
Mr.NitroBurner is offline   Reply With Quote
Old 05-11-2014, 02:31 PM   #8
Tech Apprentice
 
Join Date: Apr 2014
Location: Ireland,Poland
Posts: 51
Default

Just an up date I Have started it up today morning and broke it in for 5 tanks and let it cool down and piston at dead bottom , fired it up 4 hrs after and i gave it another 2 tanks of break in ( i was aiming to do another 5 but the glow plug ingator was dead)
I am happy because I got it to start and the temps were ok 210F-240f, when it staled , one pull on the pull start and was running

More info to come.
Mr.NitroBurner is offline   Reply With Quote
Old 05-12-2014, 11:24 AM   #9
Tech Elite
 
1evo RRR Driver's Avatar
 
Join Date: Dec 2008
Posts: 2,385
Trader Rating: 11 (100%+)
Send a message via AIM to 1evo RRR Driver
Default

Quick question, if you have a box! Why on heavens earth would u buy a pull start motor ?
__________________
"He's CHEATIN! cause Im CHEATIN! and He beat ME!" :) "TKI4 PILOT" /XRAY NT1 16' /FUSION X3LCFM / M2c / PROTEK / FUTABA 4PX / SAMURAI
1evo RRR Driver is offline   Reply With Quote
Old 05-12-2014, 01:31 PM   #10
Tech Elite
 
Join Date: Mar 2009
Location: Aurora, Colorado
Posts: 3,670
Default

Quote:
Originally Posted by 1evo RRR Driver View Post
Quick question, if you have a box! Why on heavens earth would u buy a pull start motor ?
I was going to reply with the same thing.
__________________
TLR - Spektrum - Horizon - TLR 8ight 4.0 - TLR 8ight-T 4.0 - TLR 22 4.0 - Orion
token is offline   Reply With Quote
Old 05-12-2014, 09:50 PM   #11
Tech Adept
 
Join Date: Sep 2013
Location: Orange CA
Posts: 129
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Mr.NitroBurner View Post
Just an up date I Have started it up today morning and broke it in for 5 tanks and let it cool down and piston at dead bottom , fired it up 4 hrs after and i gave it another 2 tanks of break in ( i was aiming to do another 5 but the glow plug ingator was dead)
I am happy because I got it to start and the temps were ok 210F-240f, when it staled , one pull on the pull start and was running

More info to come.
240 is too hot. And you shouldn't let it run out of fuel when breaking in new engine.
__________________
TeamC T8 V3-Novarosi BT5
TeamC T8 V2 - Hobbywing XR8-HW1900KV
TeamC T8 -Hobbywing XR8- HW1900kV
vman1 is offline   Reply With Quote
Old 05-12-2014, 10:20 PM   #12
Tech Initiate
 
Join Date: Apr 2014
Location: SoCal
Posts: 20
Default

please tell me your not just letting it idle to break it in..
NOvarossi is offline   Reply With Quote
Old 05-13-2014, 12:26 AM   #13
Tech Addict
 
HomicidalBunny's Avatar
 
Join Date: Mar 2014
Posts: 714
Trader Rating: 4 (100%+)
Default

The first step for a heat cycle break-in is idling for 1-2 tanks, running really rich. Although I agree, if he's ONLY idling, then he's going to have issues down the line.
__________________
TLR 8ight 4.0 / TLR 8ight-T 2.0
HomicidalBunny is offline   Reply With Quote
Old 05-13-2014, 12:57 AM   #14
Tech Apprentice
 
Join Date: Apr 2014
Location: Ireland,Poland
Posts: 51
Default

Quote:
Originally Posted by NOvarossi View Post
please tell me your not just letting it idle to break it in..
No , for the first 2 tanks I let it idle than on the 3rd tank I used smooth pushes on trigger 1/10 to to get bit of rpm , 4th tank same thing but more rpm 2/10 on trigger, 5th tank same thing but quicker shots on the trigger ( car is all the time in the air) and than I stopped

After letting it cool of and piston at dead bottom I heated it up and fired it up again 6/7 tanks were the same quick short hits 2/10 on remote. on the 8 tank I started driving around 8 circles, on the 9 tank I gained bit more speed and than it stalled and I stopped because glow plug ignitor was dead.
Mr.NitroBurner is offline   Reply With Quote
Old 05-13-2014, 01:48 AM   #15
Tech Apprentice
 
Join Date: Apr 2014
Location: Ireland,Poland
Posts: 51
Default

Quote:
Originally Posted by token View Post
I was going to reply with the same thing.
I got a pull start engine because I perfer a pull start engine, I am a guy that wants to take his car into his bag and cycle to a nice bashing park, with a starter box I could not do that too heavy and dose not fit into my bag.
Mr.NitroBurner is offline   Reply With Quote
Reply



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 04:03 AM.


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