Title: 46BB problems!
Description: 46BB fuel delivery prblems.
Johnny_J - December 12, 2007 09:56 PM (GMT)
I have a 46BB motor with a fuel delivery problem.
At about 1/2 throttle it runs good at about 4 turns out on the needle. This is a new needle assm. after you run it up it dies as if you turned off a switch.
Is the needle too small? I want to be sure before I order one.
How would I figure out for sure!
Don Koval - December 12, 2007 10:22 PM (GMT)
| QUOTE (Johnny_J @ Dec 12 2007, 04:56 PM) |
I have a 46BB motor with a fuel delivery problem.
At about 1/2 throttle it runs good at about 4 turns out on the needle. This is a new needle assm. after you run it up it dies as if you turned off a switch.
Is the needle too small? I want to be sure before I order one.
How would I figure out for sure! |
Four turns out sounds a bit much. Can you lean it out some?
Flying Dutchman - December 12, 2007 10:39 PM (GMT)
| QUOTE |
| I have a 46BB motor with a fuel delivery problem |
Could you tell us the brand? That would help... :yes:
Is the fuel relatively new?
What type plug are you using? That would help... :yes:
Is it the needle valve that came with the engine? If so, it'll be just right, I'm sure of it! :D
It will just have to be adjusted properly.
Four turns out sounds too much to me too. :o
Mustangman - December 13, 2007 01:40 AM (GMT)
Sounds like the low end is in to far, Turn the low end needle out a lot, real rich!!
Start and set the high end needle for best topend, and then try and idle as best you can then set the low end needle to just a little on the rich side.
Johnny_J - December 13, 2007 03:32 AM (GMT)
| QUOTE (Mustangman @ Dec 12 2007, 07:40 PM) |
Sounds like the low end is in to far, Turn the low end needle out a lot, real rich!!
Start and set the high end needle for best topend, and then try and idle as best you can then set the low end needle to just a little on the rich side. |
Sounds good! I'll try that.
The needle valve isn't the one that came with it. The plug is new.
The fuel is new.
The turns are too much. Thats why I mentioned it.
It's a tower Hobbies brand, but I don't know who makes it.
jonkoppisch - December 13, 2007 03:34 AM (GMT)
I'm with Andy on this one!!!
Johnny_J - December 14, 2007 11:05 PM (GMT)
That did it. The low end was not an air adjustment but a mechanical fuel adjustment. I havn't worked with this type of carb before. :unsure:
Thanks for the help yall! :thumbup: