Cummins/Onan — Troubleshoot - Excessive Smoke Under Load (Overload Condition)
Testing & diagnosis · Fuel / Intake
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan MDKBH
Procedure
- Step 01: evaluate fault codes
- Step 01: check fuel supply and fuel filters
- Step 02: check intake restriction
- Step 02: check fuel flow
- Step 02: check governor actuator operation
Specs & values
- SRT 00-046: 0.5 hr step 01; 0.7 hr step 02; in-chassis accessibility B
Full service-parts list: Cummins/Onan MDKBH →
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.