I have a 650 v star that cranks but fire to the spark plugs

are the plug leads / wiring harness correct as in not swapped ?

Not trying to seem like a jerk but did you replace the spark plugs? It may still get spark but it can sometimes be too weak to get ignition (check by pulling the plug out, putting it back on the boot, touching the plug to something ground on the bike like the engine, then turn it over to see if spark is jumping the gap). The obvious thing is that you're not getting spark, the next thing coming to mind is good ground. Hopefully this helps.

check the crank sensor. if no spark then the crank sensor is usually the problem. this tell ecu to spark, cam sensor is for adjustment of firing,

It's the pick up coil.. you can check it at the plug under the tank. there will be one plug with 3 white wires on it then right next to it and wrapped together with it is a plug with two wires, one light grey and the other dark grey. check those with an ohm meter. it should read i think between 182 and 220 ohms. if its bad, it won't send the signal to tell your coils to fire the spark. Its all explained here.. http://www.650ccnd.com/coil.htm

The Voltage From The Stator To The CDI Should Be Around 40 Volts(AC) At Cranking Speed. Be Sure Your Meter Is Set For (AC) Not (DC). The CDI Changes The (AC) Input Voltage To (DC) Output Voltage To The Primary Terminal At The Coil. An Electrical Shock Hazard Exist If Stator Voltage Is Checked With Engine Running. Always Perform This Test At Cranking Speed (R.P.M.) For SAFETY. 120 Volts (AC) Can Be Present With Engine Running.

Ground the lead from a test light and then use the test light to the check the (-) negative side of the ignition coil and when the engine is cranking over the test light should flash or blink off and on rapidly indicating that there is a dwell signal to the ignition coil, and if the test light does not flash or blink then there is either a problem with the pick-up coil/stator located inside of the distributor, or there is a damaged wire somewhere in the ignition system between the pick-up coil/stator inside of the distributor and the computer, or between the (-) negative wire to the ignition coil and the computer.

Also be sure to remove the distributor cap and have someone turn over the engine and be certain that the ignition rotor does in fact turn, and that there are no blown out fuses that run the computer.


Pick-Up Coil/Stator

There is no firing order. Your bike has a coil that fires on both the compression stroke and the exhaust stroke (also called a wasted spark). Therefore either plug wire can go on either cylinder and the bike should run the same.On four cylinder bikes this meant that you could run four plugs using only two coils and two sets of points instead of four coils and four points.If the bike is running poorly try new spark plugs and new spark plug caps first(start with the cheap stuff). Next check the actual coil and pulse pick up or points. You may have to replace the coil only because the wires are cracked shorting.

try replacing spark plug 1st set at proper gap. next take plug cap off wire by unscrewing it from wire. hold 1/4" from motor and crank. if none, trim 1/8" off wire and retry. your pulser coil could be out. get multimeter, get service manual, find resistance reading,unplug stator/pulser coil plug(S) follow manual test procedure for testing stator coil, and pulser. check ign coil,make sure grounded to frame,clean rust, check resistance readings(manual) or test system w/ known good unit. lastly check wiring for continuity if no fire.

i HAVE A 2006 V STAR 650 CLASSIC WITH A STARTING PROBLEM, COIL PACKS HAVE BEEN CHECKED OK, CDI IGNITION MODULE HAS BEEN REPLACED AND STILL NO FIRE TO PLUGS, KILL SWITCH ON HANDLE BARS BEEN REPLACED TOO, STARTER WILL TURN ENGINE BUT NO FIRE AT ALL