Bike starts "every second" time only....

[Black Warrior]

Thank you so much for your all replies!
I will check everything again starting from battery connectors (even though I have checked 'em several times... )
@ Gz Rider: I thought already about relays, but concluded if starter turned therefore they should have been ok. Still thanks so much for your ideas about the second relay - definitely swap 'em and see what's going on !

[Gz Rider]

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[alantf]

Originally Posted by Gz Rider

I'm not sure exactly what the starter relay does.

It allows a low current from the starter button (therefore a thinner cable) to operate a coil in the relay, which closes the contacts for a heavy starter current (thicker cable) to the starter motor. Without the relay you would have to put 80A through the starter button. Imagine how big the button would need to be. :2tup:

[Black Warrior]

Thanks again to everyone!
I've narrowed my problem - it starts if i play with gears for a bit before trying to start a bike (First->Neutral ->First->Neutral->Second->Neutral ...) Right now it is obvious that's a problem with some connection, but I do not know where it can be. I have checked battery, switch and some other clamps, they look ok, not rusted or anything like that. They are still cleaned and connected back - nothing has changed since

[Sarris]

Brother, clean or replace your neutral safety switch. It either has dirty connections (internal plunger) or a bad diode.

[Black Warrior]

@ Sarris : that was my plan (thank so much you for confirming that!!! ) One think which I still do not get why I hear the starter every time I am trying to start ? (Confused) I thought it was supposed to be blocked too.

[Gz Rider]

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[Gz Rider]

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[Black Warrior]

Hahahahaha .... really liked it
"Check your spark." - I have checked a plug - it has a spark, that's why I'm freaking out. If I knew the reason of the problem, it would be fixed by now. Unfortunately the issue is so not consistent, I mean it happens quite often, but I can't investigate it completely since once the motorcycle started - the question disappears for quite some time until the bike gets cold.

[Black Warrior]

Never the less I will take my time and will start with "rebuilding" or changing everything part by part. Fortunately I do have an extra bike to play around.