06 S2R won't start, red oil pressure light

[RBX QB]

The Yuasa in my bike (same YT12B-BS that fits your bike) is seven and a half years old and still going strong.  One reason is they are shipped dry so life starts when you activate the battery.

My stocker (Yuasa, as above) finally gave out over the summer (just over 7 years), but I replaced with the same. My bike has never been on a tender.

[DomDucati]

Ok, so I have (finally) gotten to change the battery and re-test this issue.  I have been sidelined with a nasty left ankle injury that has kept me from doing much of anything that requires a functioning left ankle for 3 months.  Here's the rub... after changing the battery to a brand new lead acid Yuasa, the bike still won't start.  It makes 5 or 6 cycles but just won't fire up.  Anyone have any thoughts?  I'm stumped.

[Howie]

Assuming your new battery is properly charged, more than likely you have high resistance in a connection somewhere in the starter circuit.  This includes ground.  The best way to find this is by checking for voltage drop on each component and connection.  This is done by hooking a voltmeter in parallel to see how much voltage is consumed by each component and connection while under load (cranking). 

To save me a lot of typing:
http://www.aa1car.com/library/voltage_drop_testing.htm

[SpikeC]

 Gas jelly in the injectors.

[DomDucati]

Gas jelly in the injectors.

How would one clear this out?

[SpikeC]

 When I got my current bike it had sat for who knows how long and ran crappy, I added Sea Foam to the fresh gas and then Techron Injector cleaner and it transformed the bikes running. If your had the same gas in it for 6 months the chances are that the gas had turned to crud. If you get no bangs whatsoever then the injectors my need to come off for a proper cleaning. You could soak them in something or take them to a diesel shop where they clean injectors frequently.
Of course, it could be a bad ground!

[seanster]

Any updates?

Check your ground.  My SS would not start at time and it was the ground cable.

Can you have someone pushstart the bike in second gear?

[cbcanada]

Compression
Spark
Gas

That's what you need
Pull each spark plugs and check for spark

Put a fresh tank of gas in there