Hi, I have a 96 EZGO that will run fine for an hour or so then stop. I've changed and gapped plugs. Checked and cleaned fuel pump, carb and air filter. Replaced fuel and vacuum lines. When motor was just turning over, but not starting, I removed 1 plug, grounded it and there was no spark. After trying for 30 seconds a faint yellow , flickering spark started and motor tried to start. Did same with the other plug, same result. Definitely no blue spark! Plugs are new, but NGK's not available and they gave me Champion RN14YC, and gapped to .030. Please help! Thanks