I know that there is someting wrong with my setup besides the fact that I dont have a fuel fliter.I have removed them to start troubleshooting Engine running very poorly. This is a Venture 30. Any tips would be appreciated..

your running lean right? now matter how much you richen it still act's lean? I see 2 probable causes... by locating the header tank where you did you effectively moved the tank away from the engine... sounds strange since your header tank is no farther away than the main tank right... nope the engine does not see it that way... it's still looking at the main tank as it's fuel supply, only now it's MUCH farther away because it has to travel through more hose and a tank before it gets to the carb. In the pic's it looks like you could mount your header between the main tank and carb... that would be the best spot. the other thing is the header tank center line is lower than the main ...the main is already low, you want your main tank centerline about 1/8 inch or so below the carb centerline... moving the main tank is not worth it... it's not that much lower HOWEVER your header is lower than the main... not good, you want the header centerline to be up closer to the carb centerline... about 1/8 inch lower if possible.

John

When the engine does run, it runs horribly lean. Lean to the point that I have to hold on to the head or it will just tear its self apart. IT WILL NOT idle at all. I did a factory reset on this engine (OS 32) which is 1.5 turns out. Its not running at all like its supposed to. I just put the header tank on tonight. Up untill then I have had no complaints about this engine at all. If you look up and to the left of where the header thank is mounter now you will see a hole that I drilled and first tired the tank way up there. Also didnt work, same results. Also should I lign up the top tube coming off of the header with needle valve or at the top of the carb intake??? Is there anything wrong with the length of fuel line that I used???

Go here this may help.
clock the links and you will see a pic.

http://www.petesrc.com/prcp/stunttnk/stunt_tank_txt.htm
Later
Lman[8D]

THanks but have you been to that site. Links dont work.


Also should I lign up the top tube coming off of the header with needle valve or at the top of the carb intake??? Is there anything wrong with the length of fuel line that I used???

it's hard to tell by the pic... the hole your talking about is about 1 1/2 inches above and say 1/2 inch to the left of the header's current location? if so then your still not located right. see if you can get that header between the engine and main tank... set the header tanks center(middle of the tank) about 1/8 inch below the carb centrline... use the high speed needle as your carb centerline.

John

fuel lines... keep the line between the main and header as short as possible... keep the header to carb line also as short as possible BUT go ahead and add your filter/ fueling set up and keep it long enough to make fueling easy.

Thanks for the help. I am betting that, that Is my problem as well... Its just so weird cause one of my friends has his mounted just like that, and it runs GREAT!!! I cant believe why my wouldnt run just the same being the same exact setup as him.

"I cant believe why my wouldnt run just the same being the same exact setup as him. "

I've been fiddling with glow engines for going on 15 years... car's, boat's, planes and now heli's... even when you do everything WRONG sometimes it just works... sometimes you do everything by the book and it's FUBAR... no rime or reason to it... if it works GREAT if it don't keep tinkering till it does

John

Bring it into work and I'll look at it.

I would check it for blockages, it could be that the clunk in the header tank has too much fuel tube on it, and is caught in the upper corner, and if there is a bubble in there, then it may explain why its running lean

I assume you check the muffler pressure fitting. Mine vibrated lose and the bottom screw was gone. I had the same problems.

Larry

Yups maybe got a leak somewhere , coudl be leaking where the carb fits on the engine, . or the oring on the needle , bad clunk. a pin hole leak in the tank up near the exhaust pressuer line outlet, bad fuel line. improper seal betwen the exhaust /engine.

hope u get it sorted soon.

Did you get it working yet?

I mounted the tank right in line with my other tank, which ends up to line the top of the tank up with the midle of the needle valve. have checks the lines and ran new ones. screw in bottom of muffler is expoy in.

Engine will not start unless primed by holding findger over muffler. once started, it only runs for the amount of time that the priming puts fuel in the cylinder, which is about 3 seconds. This whole time it is running very lean. then it dies. It obviously isnt getting fuel (compression).
dont know why at all..

Who would have thought that a lously header tank would have taken so long to work out the problems. Easy 5 minute job....

Also, I have changed the picture at the top to a current one of my setup..I see no reason for this not to run perfectly.

Since installing the header, have you tried going back to the main tank? If the engine runs fine on the main tank (as before) then the problem is in the header tank set up. If you find that the engine runs crappy on the main tank, you need to look at the throttle needle settings again, particularly the low speed needle. Try richening the low speed needle.

This may sound like a stupid question but is the header tank filling up when you run the engine? Have you checked to make sure that the filter you're using isn't plugged?

Also, the header is at the same level as the main tank which, it appears to me, would not gain you any benefit. As suggested, I'd set the header tank so that the middle of the tank is about in line with the needle valve.

Finally, is the header tank open to atmosphere? That is, it it vented, is the third nipple open?

Just went to Pete's RC and he makes some very good points but I'm curious to know if the header is fed fuel from the main tank by muffler pressure. That may seem obvious but the last time I ran a glow heli of any significance was the Competitor a great many years ago and at the time, some header tanks were NOT fed by muffler pressure but by simple suction feed.

Your header tank looks fine to me. I mounted it the same place in my fury and had no problems with it. Did the engine run fine without the header?

Engine ran GREAT without header tank..


OK, I am hearing 2 different setups now.

One set of people tell me that i have to have the top of the header tank ligned up with the needle valve (which I do)

Another set of people are telling me that I have to lign up the tube feeding off of the header tank (middle of tank) going to my carb, with the high speed needle. this would put my header tank up higher than the main fuel tank.


I believe that my problem lies with it not getting any fuel. I can see how the 2nd idea mentioned here would make it work.

I moved the header tank to the 2nd idea mentioned above. Didn't work. Engine would not idle. ran lean at low speeds.

Turns out that one of the two screws that hold the carb in worked itsself out and it probally why it ran out of fuel and crashed, causing me to put this header thank on.


Thanks for all the help