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Duratrax with Torq 12 engine

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Old 02-25-2019, 04:55 AM
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jjp735i
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Default Duratrax with Torq 12 engine

Hello,
I have a old Duratrax Maximum ST with Torg 12 engine that was given to me. Of course I don't want to sink a bunch of money into it, but i have cleaned it up and tore down the engine and cleaned the carb. I didn't want to play with the LSN yet before i asked. When I crank the engine I can get fuel to the carb by holding a finger over the muffler. From what I read, good sign, Right? I have the factory setting for the HSN, but nothing for the low. I think it's getting way to much fuel, it will sputter here and there like it wants to fire, but just won't kick over. I think it's getting way to much fuel, because after a several attempts the fuel starts spitting out muffler.

I've tried leaning out the HSN and still the same, fuel starts spitting out muffler.

I know a little bit about nitro engines from flying nitro Heli. It's never giving me any problems starting like this and it sits all winter.

Lastly, the glow plug and igniter is new. The engine has been sitting for 6 years. Piston and sleeve look good. Do have compression. Should I try and heat up the engine with a heat gun? I heard that helps. It is a bit cold in my basement.

Thank you, jjp
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Old 02-25-2019, 08:37 AM
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Big Alice
 
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manual dtxg0200-manual.pdf
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Old 02-25-2019, 08:49 AM
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jjp735i
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Thanks, but I have the manual. Does not state anything about factory LSN needle setting. Guess start one turn out and work from there.
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Old 02-25-2019, 09:03 AM
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Dug around a little bit and found this...https://www.duratrax.com/faq/faq-q460.html Might help. good luck.

Last edited by Big Alice; 02-25-2019 at 09:40 AM. Reason: did some more digging
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Old 02-27-2019, 11:42 AM
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jjp735i
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Thank you again, Gong to give another short this weekend.
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Old 03-05-2019, 04:08 AM
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Just a little update. Still can't get it started. I'm thinking I have a air leak somewhere, maybe the front bearing. Going to do some testing to see if I can find it.
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Old 03-06-2019, 09:51 AM
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Have you tried using a starter box? Easier to start a stubborn motor with a box and heat gun.
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Old 03-06-2019, 09:59 AM
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jjp735i
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I don't have a starter box. I can't even find a pull starter for it. I'm just using a socket on the one-way bearing with 18v cordless drill. I don't want to sink to much money into this. All my other trucks and buggies are electric. I did start my old nitro heli up after 14 years of sitting and it started right up. Now I'm trying to figure out how to adapt that starter to the car. It spins much faster. I did heat up the engine last time a tried. No luck. It will sputter here and there, but just wont' fire.

I just see no reason it doesn't want to fire up. Stubborn Torq 12 engine.

Thanks, jjp
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Old 03-09-2019, 08:34 AM
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What does it do if you put a few drops of fuel down the air intake and try to start it? You might still have a small castor oil lugi in the carb. That's what I'd try next, I think. Also change the fuel and air lines too if you haven't already.
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Old 03-14-2019, 07:59 AM
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It does the same thing no matter how I try and start it. Few sputters and that is it. I'm thinking it's just a trashed engine. Not worth putting any money into it.

Thanks for the help.
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Old 03-14-2019, 02:41 PM
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I wouldn't give up on it. It's probably something simple. At the very least you have a cool looking paper weight.
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Old 03-15-2019, 03:24 AM
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Thanks and knowing me, I'll never give up. Probably do some more testing this weekend.
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Old 03-15-2019, 11:06 AM
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Could be your new glow plug has been compromised by all the fuel trying to get it started. I'd go with another new plug, fresh charge on the igniter, new air and fuel lines and fresh fuel. I'm surprised no one else has jumped in to help. There's a lot of people on here way more knowledgeable about these motors than me. Come on people, help him out.
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Old 03-24-2019, 12:44 PM
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Curious if you got this motor running.
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Old 03-25-2019, 02:55 AM
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I haven't tried much lately, but last time I got nothing. Everything to start is as should be so I'm at a loss.

Thanks, jjp
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Old 04-27-2019, 06:10 PM
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Originally Posted by jjp735i View Post
I haven't tried much lately, but last time I got nothing. Everything to start is as should be so I'm at a loss.

Thanks, jjp
The engine probably was never tuned after break-in ,an the original owner gave up ,so the engine settings maybe still set at factory settings!

Try leaning both needle in some ,an make note of the turns you made on the needle settings ,a 12 size engine does not use that much fuel!
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Old 06-25-2019, 10:04 AM
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Any update on this motor?
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Old 09-21-2019, 07:12 PM
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I used to have that vehicle. Man it was a pain.
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