Merged with existing discussion on glow engine startup issues.

Quote from: abhay1290 on February 06, 2011, 11:39:11 PM
        Today i tried my best to start my ASP .25 but was able to start only once. Its a new engine. I read many threats, but none can help me.

Reading out threats to the engine should have worked. Did you try swearing at it too ? 

Seriously, there is information on this thread to find good initial settings for needles. Start from there.

Quote from: anwar on October 04, 2009, 08:14:15 PM
Hmm... that was interesting.  I did have personal experience on two different occasions where Thunder Tiger engines on cars would not start at all until the low needed was open 4 turns or above.  Only had this with TT engines, and that is why I asked the question that way.  Must be one off incidents.

had the same issue with a TT 61 size engine last month. engine just wasn't running.
finally opened the low speed needle and the engine ran just fine.
regards,
Avijit

Every engine one deals with seems to add to the knowledge base !

Thanks all,
               Ive read replies and learnt several thinks, which i never knew  .Hope to get time soon to have a try with the engine again. Now i am confident enough to start engine.In my earlier attempts i was a little afraid, but now i can go far further with the provided guidelines.

Thanks again,
Regards,
Abhay Singh

if you can get hold of an electric starter, flood the engine, remove the glow plug and run the starterfor 4-5 seconds.. fuel will spray out of the glow plug opening. once the fuel stops spraying out, replace the glow plug, apply the booster and flick the engine . it is sure to start.
Avijit

When you are doing as adviced by the good Doctor, make sure to either remove the tank connection or close the high speed needle fully in else, the fuel spray from plug hole would continue till the tank is emptied.

thanks all,
Today i tried to start the engine that was finally mounted on plane. And it was unbelievable , following the instructions, the engine started in first frick. I dont owe chicken stick, so i started with the back holder of screw driver.

One more thing i would like to add, which was my foolishness, that the fuel tank was lying at a very much lower level earlier, so the fuel backed up in tank due to suction force.

Abhay

Quote from: abhay1290 on February 21, 2011, 11:10:48 PM
thanks all,
the engine started in first frick.

Must be a Chinese engine.

Don't check the urban dictionary for this type of flicking   It is definitely NSFW !

yes Sushil sir, it is ASP .25 engine.(made in china)..

Quote from: sushil_anand on February 22, 2011, 12:22:22 PM
Must be a Chinese engine.

what sushil meant is the term is FLICK and not fRick.
Avijit

The joke is simply that Chinese pronounce "l" as "r". Even their cameras go "crick"!

so! t was a joke on me..hum. 

hum?  Sure if you don't know the words.

High everyone. I am a newbie at engines. I have a o.25 OS engine and it is giving me a hard time sustaining.
The engine starts fine. However the moment i take off the booster it stalls.
I am using the recommended needle settings ie 1 and 1/2 turns.
Please suggest solutions.

The first thing to check is if you have a weak/bad glow plug. 

Hi Anwar,
Thanks for the reply. I checked the GP. Its fine as far as knw. It glows bright when i connect the booster.
What else do u suggest?

What happens if you increase throttle to above 50% and then remove the booster ?  Does the engine continue to run ?

If the behaviour you described is during idle (or very low throttle), then try leaning out the *low* needle a bit.

When i am at more that 1/2 throttle and remove the booster, the engine dies slowly. There is an immediate drop in rpm though as soon as i take off the booster. It stalls eventully. I played with the needle and everything works fine as long as the booster is on

@rockmania.89
Check plug colour. Should glow orange, not red.
Is your fuel old / has water/ has no oil or too little oil.
Try freshly mixed 80% methanol / 20% castor oil (and 1%-5% nitromethane if you have it)
Colour of exhaust smoke?

From page 27 of OS Max 10/15/25 LA Series Manual:
Engine starts but revs decrease and engine eventually stops. Mixture too rich. Close needle half turn.
Engine stops when battery disconnected. Mismatch of glowplug and fuel. Change fuel or glowplug.

Hope this helps

Quote from: rockmania.89 on January 03, 2014, 07:07:12 PM
I played with the needle and everything works fine as long as the booster is on

Not sure what playing means. When people try to help remotely, please take the time to describe what exactly was involved in this "play".  Which needle did you try messing with, in which direction etc etc.

I hope you understand the difference between low needle and high needle, and what it means to "lean out".  What you are seeing is typically the result of a weak glow plug, or too rich a mixture. 

Please respond with exactly what you tried (or you are going to try), based on the above suggestions.

Hello everyone. Thanks for replying. Also apologies for not describing the entire thing. By playing around i meant that i have the needle valve set to 1 turn from full closed. So the behaviour is as expected as far as the booster is on. Also the glow color is orange and not red  . I guess i will change the gp and check once ,havent done it so far as i dont have a spare one.
Thanks for ur thots

@rockmania.89
You didn't say anything about the fuel.

I m not sure how old the fuel is . Got it from a friend. Also i dont have nitromethane.