RV Generator Repair in Lancaster, CA
An RV generator is essential for off-grid boondocking and keeping air conditioners running while traveling. We service Cummins Onan, Generac, and portable RV generators—handling carburetor cleanings, oil & filter service, spark plugs, voltage regulators, and fuel pump replacements.
Service Quick Overview
Understanding rv generator repair for your RV
RV generator repair at Javi's RV Services Center covers diagnostics, maintenance, and component replacement for Cummins Onan, Generac, and portable RV generators. Common work includes carburetor cleaning for fuel that has varnished during storage, oil and filter service, spark plug replacement, fuel pump and filter changes, and stator/rotor/voltage regulator testing for units that run but produce no clean power.
An RV generator is a small engine bolted to an alternator, and both halves must work together. A unit that starts but shuts off after five minutes is usually a fuel-delivery or control-board problem, while a unit that runs but trips the coach transfer switch is usually an AC output fault. Our Lancaster shop load-banks every generator so we confirm it produces stable voltage under real demand — not just that the engine starts.
Signs You Need RV Generator Repair
If you recognize any of these symptoms, call our Lancaster shop to schedule a diagnostic before the problem worsens.
How RV Generator Repair Works at Javi's
Start & Output Diagnostic
We attempt a controlled start, measure AC output voltage and frequency under no-load and load conditions, and pull fault codes from the control board to narrow the failure to fuel, ignition, or electrical output.
Maintenance & Carburetor Service
Varnished fuel is flushed, the carburetor is cleaned, oil and filter are replaced, and the spark plug is inspected and replaced as needed to restore reliable starting.
Component Replacement
If output is low or unstable we test and replace the voltage regulator, fuel pump, or control board, all quoted on a written estimate before installation.
Load-Bank Verification
Before pickup the generator is run under load-bank testing to confirm stable voltage and frequency with the air conditioner or heater drawing real current.
Call for a Written Estimate
Every RV and repair is different, so we quote from a written estimate after inspecting your vehicle — you authorize the scope and cost before any labor begins. Call the Lancaster shop to discuss your RV and the work you need.
Call (661) 942-2492Why Our Shop Wins
Common Symptoms We Repair
Questions RV Owners Ask
Q: Why does my Onan generator start and then shut off after a few minutes?
The most common cause is varnished fuel in the carburetor or a failing fuel pump that can't sustain flow once the bowl drains. We clean the carburetor, replace the fuel filter, and load-test so the generator runs steadily under demand.
Q: Do you service portable RV generators or only built-in Onan units?
We service both built-in Cummins Onan and Generac units and many portable RV generators. Call with your model and we will confirm compatibility and bay scheduling.
Q: How often should an RV generator be serviced?
Most manufacturers recommend oil and filter service every 100 to 150 hours or annually, whichever comes first. Generators that sit unused for months especially need carburetor cleaning and fuel stabilizer treatment.