joco1

trying to start my 46 ax for the first time (sky raider mach 11) ive got three lines running from the tank and i know they are hooked up right but i cant get any fuel to the carb at all even when i hold my finger over the carb to prime it none runs thru the line........was hopeing to break the engine in tonight and maiden tomorrow ....but i cant get it to start !!!! any ideas?

RCKen

My Feedback: (9)

Joco,
Ok, what you need to do is figure out if the fuel can even get out of the tank. The easiest way to check that is to fill the tank, and then remove the line from the carb and the vent line from the muffler. Blow into the muffler vent line and fuel should be pushed out of the line to the carb. If this doesn't happen then you have something inside the tank or the lines that is plugged up. If you can get fuel out then you need to look at the engine. The needle valve may have something in it blocking it. Connect your fuel pump to the carb inlet and remove the needle valve. Close the carb barrel completely and pump a little fuel through it. This should flush out anything that might be blocking that.

Give these two things a try and see what happens.

Ken

Alex7403

also check if the fuel tank is sealed and the needle valve is open,oh i prime when carb is open

Jim Thomerson

If you have three lines they are thustly: (1) line from clunk to carb. (2) line from somewhere to muffler, (3) vent line going to top of tank and plugged after filling the tank through the muffler line. Check and see if this is right. Sounds like you might have the vent line going to the carb.

joco1

it was the latter of the two rc ken there was something behind the needle valve ,i hooked the fuel pump to the carb after removing the needle valve and felt something go thru,then i put the needle vave back in and turned it over once and she fired right up! thanks very much for the help and by the way, rc ken you have about got me convinced you always know what you are talkin about

rlipsett

Don't compliment Rc Ken like that or his head might swell up so much we might never get his head back into the forum. Good call ken

joco1

lol, i know what ya mean ,but i gotta give him his due credit .....that dude knows his rc planes!!!!!

goirish

Hey it was a lucky guess. Funny how lucky RCKen is.

RCKen

My Feedback: (9)

I have my moments!!!!!!

Ken

bruce88123

Problem is that he gives the same answer for questions about loose wheels and other stuff. He had to be right sooner or later. Just like a broken watch is correct twice a day.

goirish

Ya know Brucem old Ken might be right 3 times a day. The lucky stiff

bruce88123

That's the second time you called him "old".

goirish

Nobody is as old as I am, well maybe, nah!!

bruce88123

OH, so you were speaking from a position of authority?

goirish

I don't know if you know who methuselah was, but we were brothers. I guess that makes me old.

OzMo

My Feedback: (3)

If you guys keep this up we will have to pass the hat just to buy him a bigger one

Never say anything bad to RCKen....good help is hard to get! Especially at these prices!

joco1

well i gotta nother RC KEN question since we are on carbs, i was putting together a pulse 60 and it is my first plane to cut a cowl to fit! well after taking my cowl on and off two dozen times i finally got it to fit and i was trimming a little around the carb to get a better fit and i accidently nipped (for lack of better word) the carb and the top of it now has a place out of it ........will this hurt the performance as bad as it hurts the appearance!

RCKen

My Feedback: (9)

Won't hurt anything. Just looks bad. But it's not going to affect the performance of the engine at all.

Ken

ply2win

My Feedback: (3)

I just have to ask, what in the world were you using to trim the cowl that could take a chunk of metal off the carb?

It must have been a pair of those scissors which will cut through anything that are advertised at 3 in the morning

joco1

lol, actually i had the carb covered up with a shop rag ,and was trimming with a dremal and i dont know when i did it, it was like that when i uncovered the carb! i had been taking the cowl off and this time i left it on and trimmed...............it was another one of those great lessons learned!!!

flyinrog

My Feedback: (1)

So what ya do is, take a tiny v file and clean up that chip and then cross the venturi and make the same notch then do it again 90 degrees and if someone asks,, you can tell them "ya its the rare notched version, only a few of them made, supposed to help turbulate the air"...Rog

OzMo

My Feedback: (3)

LMAOROF
Thanks ROG I needed that!