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.25 Engine Failing/killing glow plugs - 2/9/2013 2:14 AM   
aussi


 

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i have Smartech SM-t truggy with .25 engine the problem is it is failing all the glow plugs with in half a tank of fuel. glow plugs look all right mean not damaged or burnt or broken. i have tried every thing from leaning it to richen. and also resealed all the engine again. it starts normal and while driving it stops with in few minutes and when i check the glow plug it just stops glowing. Now need your help. thank you



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RE: .25 Engine Failing/killing glow plugs - 2/9/2013 2:32 AM   
nitroexpress



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quote:

ORIGINAL: aussi

i have Smartech SM-t truggy with .25 engine the problem is it is failing all the glow plugs with in half a tank of fuel. glow plugs look all right mean not damaged or burnt or broken. i have tried every thing from leaning it to richen. and also resealed all the engine again. it starts normal and while driving it stops with in few minutes and when i check the glow plug it just stops glowing. Now need your help. thank you



Engine rod could be worn out.

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RE: .25 Engine Failing/killing glow plugs - 2/9/2013 3:14 AM   
t-max97



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Status: offline 		Are you saying when you put the igniter on the plug it doesn't glow but it's not damaged?

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RE: .25 Engine Failing/killing glow plugs - 2/9/2013 12:45 PM   
supertib


 

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Status: offline 		get a stronger glow ignitor

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RE: .25 Engine Failing/killing glow plugs - 2/11/2013 3:54 AM   
nitroexpress



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ORIGINAL: supertib

get a stronger glow ignitor

It runs for 1/2 a tank.  How is an ignitor related to his problem.

When the engine stops running, his glow plug won't glow anymore.  I.E. burnt out.

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RE: .25 Engine Failing/killing glow plugs - 2/11/2013 12:47 PM   
supertib


 

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quote:

ORIGINAL: nitroexpress


quote:

ORIGINAL: supertib

get a stronger glow ignitor

It runs for 1/2 a tank.  How is an ignitor related to his problem.

When the engine stops running, his glow plug won't glow anymore.  I.E. burnt out.



it runs rich for 1/2 tank, fouls the glowplug, , ignitor doesn't have enough juice to burn the contamination off the glowplug.........Put in a fresh glowplug and it lights right up..............I see this all of the time at the track, guys think they killed plug after plug only to have me show them their little handheld glow ignitor doesn't have enough juice for the job.......This is why I use a ignitor with a 12v power source...........In my day I have probably see over 100 plugs wasted because of the ignitor not having enough juice to burn the contamination off the plug.............. the plugs look perfect, except they wont light.................. most small handled ignitors barely have enough juice to light a fresh plug..let alone a contaminated plug..........this gets even worse when guys run cold plugs......

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RE: .25 Engine Failing/killing glow plugs - 2/16/2013 2:26 AM   
JoeMaxx


 

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Status: offline 		Since you did not tell us what glow plugs you are running I would suggest a cooler plug.   It could be you are frying the plug because it is not the right plug for this engine.  

Personally I run a Medium Heat Glow Plug because the Filiment is a little larger then a hot plug and will last longer.   The thicker the filiment in the Glow Plug the Cooler it will run.  

If you get to cold of a plug it will Flame out. 

I generally suggest Medium Heat Plugs in most engines in the summer months prevent frying them and hotter plugs in the colder months to prevent flame out.  

Here is a link explaining glow plugs.  

http://www.oneten.co.za/showthread.php?1381-For-the-nitro-guys-Glow-plugs-explained




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RE: .25 Engine Failing/killing glow plugs - 2/26/2013 12:37 PM   
aussi


 

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Status: offline 		yes exactly glow plug looks perfectly fine but no glow, tested with atleat three ignitors

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RE: .25 Engine Failing/killing glow plugs - 2/26/2013 12:40 PM   
aussi


 

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Status: offline 		thanks mate i took it to the hobby shop even no glow their. still a mystery

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RE: .25 Engine Failing/killing glow plugs - 2/26/2013 12:44 PM   
aussi


 

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Status: offline 		yep exactly you got my point, but whats the solution, scraching my head

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RE: .25 Engine Failing/killing glow plugs - 2/26/2013 12:48 PM   
aussi


 

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Status: offline 		hi i have used different plugs, but mostly medium hot. but have not tried cold yet

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RE: .25 Engine Failing/killing glow plugs - 2/26/2013 5:47 PM   
Anthoop



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Status: offline 		I would expect to use a colder plug...what fuel are you running?
Have you removed the head....what does it look like in there (pictures)....does it have the correct shims?
Is the conrod/crankpin worn...(post no.2)?
Are both needles (HSN+LSN) set in the ballpark range of the manufacturers settings?

Also do you have any good close up pictures of the plug element (wire)?

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