Cummins/Onan — Troubleshoot − Engine Cranks But Will Not Start (Genset)
Testing & diagnosis · Gas Engine / Genset
From a Cummins/Onan service manual — check it applies to your exact model before use.
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Procedure
- Check spark plugs
- Check ignition module
- Check fuel supply
- Check fuel supply fittings
- Check fuel pump
- Check carburetor choke
- Check carburetor adjustments
Specs & values
- Step 01: 0.3 hours
- Step 02: 0.5 hours
Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.