Engine is hard to start

Diagnostic procedure 

• 1. Do the symptom troubleshooting for Engine will not start, engine starts but stalls immediately, or engine is hard to start - Refer to: Fuel and Emissions Systems Symptom Troubleshooting - Engine stallsFuel and Emissions Systems Symptom Troubleshooting - Engine will not start, engine starts but stalls immediately, or engine is hard to start .

Also check for 

Weak or fouled spark plugs