In the static test, Falcon Heavy fired all 27 of its Merlin engines at the Kennedy Space Center while secured to the launch platform to stop it taking off.
Elon Musk said: “Falcon Heavy hold-down firing this morning was good.
“Generated quite a thunderhead of steam. Launching in a week or so.”
The test lasted 12 seconds and created a huge cloud of steam and exhaust.
Its collection of 27 engines generated five million pounds of thrust which will be used to send a Tesla Roadster into an orbit around Mars.
Musk’s personal midnight cherry Roadster will be sent into space on the rockets maiden voyage in a hugely expensive PR stunt, it has been reported.
The SpaceX CEO said: “The payload will be my midnight cherry Tesla Roadster playing Space Oddity.
“Destination is Mars orbit. Will be in deep space for a billion years or so if it doesn’t blow up on an ascent.”
The rocket is the most powerful currently in operation and is the equivalent of three Falcon 9 rockets strapped together.
With the inaugural flight due SpaceX revealed that the first few flights will be unmanned while systems are tested.
Its first active missions are expected to focus on satellites and other space equipment.
SpaceX also hopes to use the rocket to send rich tourists into space for once-in-a-lifetime trips.
SpaceX insists they are not responsible for a “billion-dollar spy satellite” falling into the ocean after a failed launch mission.
Elon Musks’s private space agency has said their Falcon 9 rocket operated “correctly” despite the loss of the top secret mission.
SpaceX president Gwynn Shotwell said: “For clarity: after reviewing of all data to date, Falcon 9 did everything correctly on Sunday night.
“If we or others find otherwise based on further review, we will report it immediately.
“Information published that is contrary to this statement is categorically false.
“Due to the classified nature of the payload, no further comment is possible.”
A US official confirmed that the satellite fell back down to Earth crashing somewhere in the Indian Ocean.
It was reported that the “secret spy satellite” failed to maintain its orbit after detaching from SpaceX’s rocket.
The news of the satellite’s demise has been met with a series of statements declining to comment due to the secret nature of the mission.
Private defence firm Northrop Grumman Corp, who built the billion-dollar satellite, also made a cryptic comment through a spokesman.
He said: “This is a classified mission. We cannot comment on classified missions.”
When asked for further comment SpaceX said: “We do not comment on missions of this nature, but as of right now reviews of the data indicate Falcon 9 performed nominally.”
The high-profile mission has been branded a failure after the highly sensitive and expensive craft was lost.