Should there be fuel coming out of the muffler?

[dam74]

When pumping in fuel should there be fuel coming out of the muffler?

Well I couldn't get my sc .32 started, think I must of flooded the engine. Plus I think my starter motor was getting a bit hot, spotted smoke coming from it. Hopefully I didn't do too much damage to the windings.

Is there anyway to test that the glowplug is working properly?

[steve b]

put the glow plug in the glow stick and it should glow
if it dont is no good

[dam74]

Cheers Steve. Just removed it and tested and glows orange. So I guess that is working fine.

Would high/low needles not being set properly result in it not turning over? Or would a flooded engine / knackered engine be the most likely.

FYI, when I showed Hobbystores it they said I should bin it and get a new one but I've stripped and cleaned it up. However it might be beyond saving.

[Geek]

Fuel should only come out the exhaust when it's full fof fuel.
Or do you mean when you are trying to start?
cheers Paul

[Birdie4x4]

When filling with fuel always clamp the fuel pipe to stop it going into the engine, and then release the clamp before starting.

[Birdie4x4]

Iff you have fuel coming out the muffler ,you will have flooded it which will result in it locking up and not turning over.

[t-rex pedro]

Do you have someone experienced with nitro motors available to help? Sounds like you flooded the engine when filling the tank by not clamping off the fuel line which runs to the carb. Also, if there is smoke coming from the starter then something is really wrong! A couple of primes followed by a good burst with the glow attached should be all thats required to get the motor running.

Maybe we can talk you through it on Tuesday as quite a few guys that fly nitro will be there, myself included.

[tiddler]

I always used to remove the glow plug and turn the engine over a few times to clear any excess fuel.

[dam74]

Birdie, which would explain why the starter started to smoke. Hope you understand I am new to all of this and have never started a nitro before. The impression I got was that the starter was struggling to turn the engine. Which as you said means the engine is locked because it's flooded.

Is there any good guides on pumping fuel into the tank and priming the fuel lines to the engine. I'm trying to google search but so far everything is pretty rank. Not sure if Ash has anything on Helituning in respects to fuel pumping, priming and starting nitros.

What I did which might be a no-no, is to leave the fuel tank cap in. There is a joint on the line from tank to carb. I removed it at the joint and plugged in the pump at this point. What I noticed when I started to pump was that it got upto the cap and then it stopped at this point the fuel was pumping out the muffler and the cap started to work it's way out. What I suspected is when I started to pump the fuel in is that the air inside the tank was getting compressed to a point where it was forcing the fuel through the fuel line that goes back to the muffler.

So I guess what is the correct procedure for fuelling?

[dam74]

I always used to remove the glow plug and turn the engine over a few times to clear any excess fuel.

Yep, a guide that I'm reading now recommended that.

[Birdie4x4]

Fuel will find the easiest way , either pull the fuel line off the carb and fill that way or cut the line, fit a t peice and clamp the carb side when filling.

[dam74]

Do you have someone experienced with nitro motors available to help? Sounds like you flooded the engine when filling the tank by not clamping off the fuel line which runs to the carb. Also, if there is smoke coming from the starter then something is really wrong! A couple of primes followed by a good burst with the glow attached should be all thats required to get the motor running.

Maybe we can talk you through it on Tuesday as quite a few guys that fly nitro will be there, myself included.

Gav was going to lend a hand at some stage going over the finals with me. I've been attempting to get this thing back to a flying condition for a while now. At the moment I think it's in a state where all the servos are setup correctly and the swash levelled. The engine might not even start so I didn't want to waste anybodies time meeting up with me only to conclude that the engine is a dud.

[dam74]

Fuel will find the easiest way , ether pull the fuel line off the carb and fill that way or cut the line fit a t peice and clamp the carb side when filling.

The first way I was filling it was via the carb side but I removed it so there was noway it went through the carb. However as the air pressure in the tank started to increase the fuel forced it's way through the tank-muffler line and started pouring out of the muffler. I guess I should disconnect the line from the muffler and hold it vertical to let the air bleed out of the tank and then clamp it off?

Why it flooded was because after I saw a puddle of fuel below the muffler I did the reverse and reconnected the tank-carb line but disconnected the tank-muffler line and fuelled it via that way which I think started pumping fuel into the carb.

[t-rex pedro]

The engine might not even start so I didn't want to waste anybodies time meeting up with me only to conclude that the engine is a dud.

I would suggest you wouldn't be wasting anybodys time at all. At least if somebody is there that knows the process of starting a glow engine then the main focus (and best use of time) can be on whether the motor is any good or not. You could be doing something wrong that can easily be pointed out and right away have that thing running.

[Birdie4x4]

When filling from the carb side, fuel should only go to the muffler when the tank is full, there should be no pressure in the tank as it is the pressure from the muffler when the engine is running which provides the pressure to feed the engine.