Hi Gopi I am not an expert in cars But, In your earlier post you have suggested that you are keeping the carb needle (big one) to two and a half turn from fully closed. Please try starting it from one and a half. Then increase slowly to two or more to break-in as instructed. Two and a half could be a very rich mix and may be you are not getting a burn without the nitro. Is it possible to give the engine make and model? I can check with my friends who are into driving. All the best..

Manoj bhai - The big needle has pretty much no impact on the low end. 

This is one of those cases where you feel you were closer to the action.  A lot of times, it is the sight and sounds that tell us what the issue is, when it comes to glow engines.

Anwar Sir, my Car make is GS Racing, Storm Unlimited Truck. Engine Engine Model: R25MT. Ya its one of those situations, where physical presence would have been helpful!!!

Quote from: anwar on July 15, 2010, 11:58:17 AM
Manoj bhai - The big needle has pretty much no impact on the low end. 

100 % true. But I have noticed starting trouble with bigger needle opened more.  And I took advance bail stating “I am not an expert” in my post.  But did he tried reducing the needle setting ??

Notyet manoj bhai!! 2day evening i will reduce the needle setting to 1 1/2 turns and try.

Please also check the Glow starter and plug. Is it your first car ?

Some times the reason for not starting is simply cause the low end needly has been screwed in tooooooooo much, so do check that also. And do prime necely. would be good idea to start all over again with a new glow plug in place. if engine has been run-in, 2 and 1/2 turns of main need would be too much. safe bet would be 1 1/2. take the glow plug out if u have starting problem and check if it is dry or very very wet. that would give u a hint. and since u have taken the glow out, put the starter to the engine and when u turn see if large droplets of fuel get thrown out, definitely flooded, and also if u r getting a nice red glow. and now when u put ur glow back, better chances of firing immediately, dont forget to put the booster.
Ramesh Tahlan

If this is brand new engine (which I believe is the case), the low needle should be at the right place.  More often I have needed to lean it a bit for sustained idle.  Also 1.5 turns on an engine that has NOT been broken in would be too lean to start with.

It also depends on the familiarity of the person with glow equipment in general, and how thoroughly the suggestions are followed upon.  For example, going back to the basics, I asked to check the glow plug and ignitor, and the response was that it was "all good".  HOW was it determined ?  This question may be borderline insulting to someone who has glow experience, but extremely crucial (and even the solution to the problem) for a beginner in glows

Quote from: rameshtahlan on July 15, 2010, 01:13:40 PM
a new glow plug in place. if engine has been run-in, 2 and 1/2 turns of main need would be too much. safe bet would be 1 1/2. take the glow plug out if u have starting problem and check if it is dry or very very wet. that would give u a hint. and since u have taken the glow out, put the starter to the engine and when u turn see if large droplets of fuel get thrown out, definitely flooded, and also if u r getting a nice red glow. and now when u put ur glow back, better chances of firing immediately, dont forget to put the booster.
Ramesh Tahlan

hi ramesh. i dont have a spare glow. this is my first car. i removed the glow n connected it to the glow igniter. the filament became red. this was the way i checked the glow. anwarji is there any other way i can check this? i really feel so out of all u guys league!!
rameshji after removing the glow, u say to pull the starting cord and check if fuel is thrown into the cylinder right? ok will do that again!! fuel is to be thrown on top of the piston\, am i correct? and if i dont c fuel thrown into the cyl head what adj should i try?

If you remove the plug ang pull the starter the fuel will spray out. So keep your eyes away from it. Your way of checking the glow is correct.

Quote from: anwar on July 15, 2010, 01:22:56 PM
It also depends on the familiarity of the person with glow equipment in general, and how thoroughly the suggestions are followed upon.  For example, going back to the basics, I asked to check the glow plug and ignitor, and the response was that it was "all good".  HOW was it determined ?  This question may be borderline insulting to someone who has glow experience, but extremely crucial (and even the solution to the problem) for a beginner in glows

sorry anwarji if i hav offended u unknowlingly!! i checked the glow by removing it from the cyl head and attaching it to the igniter(a lighter kind of thing with a single C LR14 battery...correct?)the filament turned red. further suggestions pls? did i use the correct technique to chk the glow?

Not at all, and please accept my apologies if sounded so   I was just expressing a bit of frustration about not being able to help from remote   Also making sure that these diagnostics are to be taken literally and seriously, as simple misses can be difference between success and failure.

And your method of checking the glow is correct.

Gopi,
when u remove the glow plug, and operate the starter, then what happens is that if there was flooding, the excess fuel gets thrown out and u will see it. But when u removed the plug, was it very wet or was it dry. The next step will be decided on the condition of the plug. if it was dry, then u r not priming enough, and fuel is not entering the carb properly.
Rameh

ok guys i noticed something...sorry i missed out on this. after removing glow plug....i pull the starter cord.....no flooding in combustion chamber or no splashing of fuel!! wat to do?

ok, in all probability, adequate fuel is not going in, so for the time being, remove the air filter on the carb, now choke it with ur finger, and pull the starter 3 or 4 times, and see if u can see the fuel in the fuel line rushing to the carb. but do it after u have put the glow plug back. put the booster, and it should fire

Here is where the symptoms/details get interesting   And Gopi, please bear with us as this is taken step by step.

1. You should not expect a big spurt in fuel through the plug hole unless the engine was previously flooded.  But you should be able to see some droplets flying out all the time, if you throttle is not fully closed. In short, "flooding" or "big splashing" is not the normal expectation !

2. Your comment from before (quoted below) gets interesting in this case. I assume you saw fuel moving in the fuel line towards the carb, and that is why you made the comment.  But if there is no fuel AT ALL that is exiting the engine through the plug hole, that would be contradictory to the observation below.

Quote from: gopi_aish on July 13, 2010, 08:27:09 PM
I checked fuel lines...the fuel is entering the carb.

Just wanted to reiterate that attention to detail is extremely important

This situation of "fuel not entering the carb" should have been ruled out by the "dropping a tiny bit of fuel though the barrel opening" test done earlier.  So I am not sure if this is a "fuel not entering the carb" issue at all.

ANwar sorry for the contradictory statement!! Previously i had done a silly mistake.....i tried blowing into the air line going in from the exhaust muffler to the fuel tank..thus pressurising the line forcefully....n i could c fuel drops coming into the carb barrel ( i had removed the air filter) and overflowing!! but today i tried just kick starting the engine n couldnt c fuel comint into the carb n fillign up even after repeated strokes to starter!!

Pls bear with me!! Its more frustrating coz theres no one here who has a nitro rc....so nobody in location to help me out!! its all bcomin trial n error now!!

ANwarji pehle to aap bataiye....steps to start teh engine!!!

If all fuel lines, etc r ok....

1) Put Glow igniter in glow plug.
2) Pull the starting cord.

am i correct?

Guess it is good to list the steps   I am not a car person, so I will make a best guess for cars, as nitro engines are nitro engines !

1.  Fuel in the tank, lines connected OK.
2.  Make sure barrel is not fully closed (the 1.5mm thing we have have been talking about).  Make sure needles are appropriate (defaults).
3.  Remove ignitor, pull starting cord couple of times to see if the fuel is coming up into the carb.  If fuel is not being pulled up, choke the engine by either putting the thumb against the carb opening OR blocking the muffler outlet with the thumb.  We need to get fuel moving into the carb, this step is called "priming".
4.  Connect the ignitor, and pull the starting cord.  Try slightly different throttle settings and/or block the muffler to force fuel for a seconds, if the engine does not start.

This is about what I can think of for a normal starting procedure. Remember that repeated use of the ignitor will deplete its battery, so you need to remember to charge it if you have been using it for a while.

ok anwar....when i try priming if fuel is not entering carb....wat to do

Then you have to check the needle settings, especially the low needle. The barrel opening is also important.

In rare cases (should not be the case for new engines), it could be dirt in the carb, and so on.

Quote from: anwar on July 15, 2010, 11:58:17 AM
Manoj bhai - The big needle has pretty much no impact on the low end.  

This is one of those cases where you feel you were closer to the action.  A lot of times, it is the sight and sounds that tell us what the issue is, when it comes to glow engines.

Strangely enough, I feel its the other way around! The high end has SOME effect on the low end. In fact, varying it on idle can give you a good indication of which way to go , on the idle screw, for a good idle. The idle setting has very little, or zero effect on the high end.

My wording is the confusion... the "pretty much" did not convey that the impact is small enough (as compared to even small changes in the low needle itself). 

And your comment on what affects what is accurate.

anwarji...checked all items 1 by 1 patiently....disconnected n attadched pipelines again...fuel flow to carb bcame normal!! i removed the air filter...then pulled throttle back...so barrel moved back...n then pulled kick start cord....fuel started splashing in carb....checked glow again...red hot!! now i have a doubt in my methanol also....attached pic....85% methanoil and 15% castor is it ok? i men the methanol iam using?

Here is where my lack of any significant experience with home brew fuel shows up   Hopefully others can pitch in and recognize this particular brand/type.

I hope you have tried starting at different throttle settings and have also tried starting with the exhaust blocked.