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Home›Engines›Cummins/Onan Marquis Gold

Cummins/Onan Marquis Gold Engine

The Cummins/Onan Marquis Gold is an engine rated at 2400 rpm. It powers generator sets from Cummins/Onan, including the Marquis Gold 5500 and Marquis Gold 7000.

Also known as: Onan Marquis Gold

2400 rpm
Rated speed
On this pageSpecsGenerator setsMaintenanceFAQ

Engine specifications

Rated speed2400 rpm

Generator sets powered by this engine

2
Cummins/Onan Marquis Gold 5500Cummins/Onan Marquis Gold 7000

How to read your Cummins/Onan engine serial & model number →

Common problems

3
  • Unit runs then surges
    Cause: Loose or worn spark plug leads
    Fix: Check spark plug leads at spark plug & ignition coil
  • Unit starts and runs, then stops when the start switch is released
    Cause: Low fluid levels
    Fix: Check & bring all fluids up to the appropriate levels
  • Circuit breaker trips
    Cause: Overloaded circuit
    Fix: Turn-off some of the electrical load, and reset the circuit breaker

Compiled from service & troubleshooting documentation across every generator set that uses the Cummins/Onan Marquis Gold.

Maintenance schedule

ItemSpecCapacityPart #Interval
BatteryClean & Check Battery & Connections—50 hr
Spark plugReplace Spark Plugs—250 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Common questions

Which generators use the Cummins/Onan Marquis Gold engine?

The Cummins/Onan Marquis Gold powers 2 generator set(s), including Cummins/Onan Marquis Gold 5500, Cummins/Onan Marquis Gold 7000.

What is a common problem with the Cummins/Onan Marquis Gold engine?

A commonly reported issue on generators using the Cummins/Onan Marquis Gold is: Unit runs then surges. Cause: Loose or worn spark plug leads. Fix: Check spark plug leads at spark plug & ignition coil.