Cummins/Onan — Troubleshoot − Engine Overfueling (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 fuel pressure at carburetor
- Check choke heater
- Check governor adjustments
- Check carburetor adjustments
- Check ignition coil
- Check ignition module
Specs & values
- Step 01: 0.4 hours
- Step 02: 0.6 hours
- Step 03: 1.0 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.