Motorcycle Repair: electrical and fuel, motorcycle batteries, check battery

Question
hi ive recently bought an cb750sc nighthawk import
my bike broke down due to a coil going down which i later fixed,6 weeks later my bike just stopped tried to restart but failed to restart i thought it was the battery so which i replaced but only lasted 2 days and went flat iwas told it was a recharging problem,so i replaced the regulator/rectifer also the stator it quite done the trick but not fully,then the bike started to miss fire from 1st gear to top speed please help

Answer
Hi Andy,

The problem may be related to a defective charging system, a defective ignition system, or other.

The systems need to be inspected for proper operation to locate the source of the problem.

Check battery condition. The battery must be in good condition and fully charged for the motorcycle to function properly.

Use a multimeter and check battery voltage and charging system output. Use a Hydrometer designed for motorcycle batteries and measure the specific gravity of each battery cell.

Remove and inspect the spark plugs. Visit "www.ngk.com/sparkplug411.asp" and compare your plugs with those on this page.

Visit "www.electrosport.com/electrosport_fault_finding.html" and follow their electrical "Fault Finding Chart."

Respectfully,
Mark Shively