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Ty 175 Not Starting When Hot... Any Ideas?

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Hi folks...help!

Last couple of events i've done, bike has started fine when cold...out the garage. But during the day, when i've stopped and switched off between sections its pig to restart.

I notice i hear a loud electrical 'crack' when it fires from cold, and never get the same later during the day. when i hear the crack it inevitably starts. When running its fine, usually ticks over though occasionally dies on tick over when hot. I am definitely no expert so any explanations please keep simple.

Many thanks

Jim - with sore right leg...

I notice i hear a loud electrical 'crack' when it fires from cold, and never get the same later during the day. when i hear the crack it inevitably starts. Jim - with sore right leg...

I am not sure why you can hear an electrical "crack".....that tells me you are getting some sort of arcing that occurs outside of the engine and spark plug. Perhaps you have a broken high tension wire, problem with the coil....or some fault that allows a spark to jump a gap that you can hear. I am not sure why this sound would go away when warm.

Is the plug cap cracked as this may arc if the insulation is broken?

Sounds like condenser to me I have had the same problem, I have always started to eliminate the cheap bits and gradually work up. Put electronic ignition on mine now and starts first kick every time hot or cold.

  • Author

Thanks folks,

Yes the plug cap 'seems' fine - all the electrical bits were new in the last 18 months, thats not to say something is amiss and i am thinking there must be an electrical fault somewhere. Just been out and it wouldn't start cold this time either - but have put a new plug in and it started fine. What is the cost/difficulty of fitting electronic ignition Bruno?

Thanks folks,

Yes the plug cap 'seems' fine - all the electrical bits were new in the last 18 months, thats not to say something is amiss and i am thinking there must be an electrical fault somewhere. Just been out and it wouldn't start cold this time either - but have put a new plug in and it started fine. What is the cost/difficulty of fitting electronic ignition Bruno?

Electronic ignition is easy to fit but does cost around

  • Author

Electronic ignition is easy to fit but does cost around

The ignition is dead easy to fit, you get step by step instructions with it. Try a new condenser and points they are only cheap, then coil, I have got a stator plate with new points and condenser for sale on Ebay at the moment and a new coil have a look !!!!

I had the same problem, new condenser and points,fixed for little cost.

Gday, what colour was the old plug? If fitting a new one got the thing running, there is another problem that needs to be rectified before you go fitting electronic ignition which may not fix it!

Cheers,

Stork

  • Author

G'day stork

Well the plug was out between events and looked fine so I am not sure the mix is the problem but I am open to suggestions. Taking it out tonight it was pretty oily but I think that's coz I never got it started. What you thinking?

  • Author

If I change the points and condenser do I then need to check and or set the timing again?

The cracking sound when it start?? Hummm.... wiring grounding somewhere?? I would check that

Guy

( If you are loking to find a reason to spend 200 .. that's another thing ) :closedeyes:

Gday, see if you can find out why the plug was oily. I'd also look for the "cracking" noise. A look in the dark (with an assisstant) might help. If you fit points you need to reset timing.

Cheers,

Stork

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