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Norm's 2 stroke repair center Having problems with your 2 stroke engine? Just ask Norm, he loves to tinker and troubleshoot engines

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  #31  
Old 04-11-2014, 10:20 PM
Mungface78 Mungface78 is offline
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Default Re: No start wonder!

I think the floats ok, spark plug was loaded with fuel.
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  #32  
Old 04-11-2014, 11:21 PM
Mungface78 Mungface78 is offline
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Default Re: No start wonder!

Idle screw is almost maxed.
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  #33  
Old 04-12-2014, 02:14 AM
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Default Re: No start wonder!

Mungface, That sounds like a massive air leak to me.
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  #34  
Old 04-12-2014, 03:30 AM
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Default Re: No start wonder!

Quote:
Originally Posted by GearNut View Post
Mungface, That sounds like a massive air leak to me.
I have to agree with GearNut , my build had identical issues reciently ,I flushed the carby fully ,cleaned the pin and jet ,checked the float and brass tang ,checked the inline filter on the tank and as such the fuel flow to the carby , turned out to be an air leak where the carby joins the inlet manifold ,the carby needs to sit very flush on the manifold or you will get air leaks in the 3 slits on the carby (the part that slides on the inlet) ,as soon as I had the carby on flush with the inlet manifold everything returned to normal .

Check the fuel flow aswell these bikes work on gravity feed ,if there's a blockage the motor will starve .
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  #35  
Old 04-12-2014, 06:58 AM
Mungface78 Mungface78 is offline
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Default Re: No start wonder!

I put silicone between the intake and carb(forgot to mention that). I did notice a bit of air in the fuel line, but it was getting fuel as the plug was soaked. Should I take the carb apart again and double check? Thanks you guys so far for your input.
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  #36  
Old 04-12-2014, 12:06 PM
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GearNut GearNut is offline
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Default Re: No start wonder!

If the carb is not flooding, I would leave it alone for now.
Are you using the factory spark plug cap? They have caused all sorts of trouble on new builds and should be replaced with one from a motorcycle shop ASAP. Alot of folks recommend replacing the spark plug wire and cap as an assembly with one for a car.
Also, it could be that the spark plug itself is bad, even if it is brand new. Brand new does not always mean good. They can spark just fine while sitting on top of the cylinder head but when put under the stresses and pressures of a combustion chamber they fail.
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  #37  
Old 04-12-2014, 12:45 PM
Mungface78 Mungface78 is offline
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Default Re: No start wonder!

Well I'm 99.8% sure I've found the problem, on the magneto one of the solder joints broke loose not the one on the black or white wire the one coming from the copper windings to the magneto "frame". Goin to head over to my pops house and dig out his solder iron. Looks like the factory did a piss poor job with the soldering on the mag.
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  #38  
Old 04-13-2014, 12:49 AM
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Default Re: No start wonder!

Good troubleshooting!
I am a bit embarrassed that I did not mention this yet, but each and every soldered connection on the mags are well known for having cold solder joints.
Most surprisingly still work well, others need the all connections cleaned and re-soldered properly.
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  #39  
Old 04-13-2014, 06:21 PM
Mungface78 Mungface78 is offline
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Default Re: No start wonder!

Thanks you guys! Bike is running great!
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