Cummins/Onan — Troubleshoot − Excessive Exhaust Smoke Under Load
Testing & diagnosis · Fuel / intake system
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA
Procedure
- Check intake air restrictions
- Check overloaded generator
- Check valve settings
- Perform checks in step 01
- Check injection pump timing
Specs & values
- SRT 00−046
- Step 01 time 0.8 h
- Step 02 time 1.5 h
Full service-parts list: Cummins/Onan HDKA →
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.