Multiquip
Abnormal Exhaust Smoke
Excessive white or blue smoke from exhaust during operation
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Overfilled engine oil, Worn piston rings or valve guides, Incomplete combustion due to low compression, Coolant entering combustion chamber (head gasket leak)
How to Fix / Troubleshooting
Safety first: Operate the generator in a well‑ventilated outdoor area. Avoid inhaling exhaust fumes.
- Step 1 – Check oil level: Verify that oil is not overfilled. Drain excess oil to the correct level if necessary.
- Step 2 – Observe smoke characteristics: White smoke that smells like coolant may indicate a head gasket leak; blue smoke suggests oil burning.
- Step 3 – Inspect coolant level: If coolant level drops and white smoke persists, shut down the unit and have a technician test for head gasket failure.
- Step 4 – Engine wear: Persistent blue smoke with normal oil level indicates internal wear. Engine overhaul or replacement may be required.
Advertisements
Repair Difficulty
Professional Required
5/5
Advertisements