• Welcome to RCTalk! 🚀

    Join the #1 RC community where hobbyists connect, share, and get expert advice on RC cars, trucks, boats, drones, and more!

    • ✓ Friendly & passionate RC enthusiasts
    • ✓ RC tips & troubleshooting
    • ✓ Buy, sell & trade RC gear
    • ✓ Share builds & upgrades

beginning to get discouraged

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, and others.
J

Joeshmoe

RC Newbie
Messages
14
Reaction score
0
Points
0
RC Driving Style
  1. Bashing
have an ofna 9.5 violator with .32 engine i think it might be overkill for my first nrc but have been having problems since i got it at this point it runs wide open with the carb shut,blows fuel out the exhaust and through the carb what is up with this
 
We'll do this one step at a time.
For starters, it will not run wide open with the carb shut. You might be off throttle, but your carb slide is still open. Take off your air cleaner, look into the carb and tell us how much of an opening you see.
Once we get that straightened out, we'll take it from there.
 
let me start by saying I totally respect your opinion. but the darn thing is running wide open with the carb fully closed. Since I last talked to anyone, I have purchased and installed a new carb. taken engine off and sealed back plate, sealed around carb too. I even sealed where the cooling head attaches to the head. That is the only thing I can think of at the moment is maybe I shouldnt have put sealer there. All of your advice is totally appreciated thanks, Joeshmoe
 
It is not possible for the engine to run at WOT with the carb fully closed. Either the carb is wide open or it isn't. Like Rolex said you have to take off the air cleaner off to verify its position. Personally it sounds like the carb linkage or the carb itself is installed backward.
 
maybe he has no form of TRS? He may think the carb is goin to the closed position when he is braking but in reality it is not... or it's just not adjusted properly.
 
Sounds like a IDLE issue or you are too lean. Again, no way can an engine run WOT.WOT means Wide OPEN THROTTLE.Your statement contradicts it
 
ShakerCo said:
I have a surefire 32r that does the same thing and the carb IS at 1mm idle and running aprox 3/4 wot. What I found to be the prob is a air leak around the HS neddle housing, so yes it is possible.
Click to expand...

I agree with you but in this situation it is best to eliminate the carb setting first then procede to look for air leaks. One can pull their hair out looking for leaks only to find out their linkage is off. Or their trim is cranked full. Process of elimination my friend.
 
I have worked on it so many times, its made me lose a little more hair. Yes I agree wide open throttle is when the throttle is wide open but i have had the linkage unhooked from the servo and pushed the throttle all the way in with the engine runing at full rpms. And yes I have had the air cleaner off otherwise i would not be able to look into the carb and see the slide all the way closed.
I dont understand how I could have the carb on backwards because then the throttle linkage would be on the wrong side. I am not totally dense when it comes to things mechanical, and have had the thing set and idle perfectly at times, and all of a sudden it takes off at full rpms. I am thinking along the lines of an air leak somewhere, thanks for that little bit of encouragement ShakerCo it lets me know that my head may be in the right place on this one. Not discouraged any more I am on a mission, and I really appreciate all of your input. It lets me know I'm not the only one who has ever had problems with these things. lol going to pull the engine again tonight and check for air leaks again the only place i havent sealed is the front end of the engine where the clutch fits on, is there someplace there that should be sealed?????
 
I too have had an engine rev too the moon at the idle position. It was a leaky HSN housing. Take the carb off. Put your thumb and finger over the carb intake and outlet making sure it is an air tight seal. Leave the fuel line attached. Fill the sink with water and dunk it under. Blow into the fuel line and look for bubbles on the carb. Let us know how that turns out.
 
If you have eliminated all the mechanical aspects then yes, there must be an air leak. I agree with the assessment about the HSN leaking somewhere.

If you don't want to dunk your engine in water you can make a soapy-water solution and brush it around any place that might leak. Plug your exhaust and your carb air intake and blow through your fuel line. If you see tiny soap bubbles forming you know where your leak is. The dunk method will work but this method is a little more precise IMO. Good luck and please keep us posted.
 

RC Builds

Back
Top