1993-2000 Honda TRX300EX Service Manual, Page 172Get this manual
Ignition System
Troubleshooting
Check for the following before diagnosing the system- oose spark plug cap or spark plug wire connection- Water in the spark plug cap- Loose or poor contact of ignition system connectorsWeak Or No Spark At Plug Good spark Try spark test with good known spark plugFaulty spark plug
Weak or no spark