Started to crank my 06street bob and it started back firing and barley ran and shut off. Changed the plugs and wires and still won't stay running but a few seconds and real rough while it does. What's the next step coil? Crank position sensor?

 

check for codes?

 

How can I check the codes

 

Try this thread:

https://www.hdforums.com/forum/ignit...tic-codes.html

 

Ok found P0131 front oxygen sensor low
P0373 ckp sensor intermittent
P1353 front cylinder no combustion

Leaning toward cKP but would that cause no combustion in the front cylinder?

 

I think the crank position sensor tells the spark plus when to fire based on the crank position. So it would make sense that when the sensor goes, you could have intermittent combustion in one or both cylinders.