SpaceX delayed the launch of the Falcon 9 rocket after engineers detected a pressure drop in the launcher. After fixing the problem, however, bad weather has pushed the project back to July.

Officials discovered the pressure drop during the rocket's second stage, shortly after they started the terminal countdown on Friday. The launch crew immediately inspected the problem and evaluated it for an hour.

Engineers were uncertain whether the problem had stemmed from the launcher itself or the ground system.

Falcon 9 has six commercial satellites mounted on its top which cost around $70 million. These Orbcomm Inc. satellites will reportedly be used to improve the exchange of data and commands with remote receivers such as cargo containers, ships, trucks, ocean buoys and weather stations.

Orbcomm plans to pay SpaceX $42.6 million for Falcon 9 to deliver a total of 17 satellites that will orbit Earth at 466 miles.

"Right now, we are going in and putting the Falcon 9 in a safe configuration," said John Insprucker, SpaceX's Falcon 9 product manager, in a company webcast, quoted by SpaceFlightNow . "The launch vehicle and the spacecraft are OK. We'll be looking at off-loading propellants. The team will continue looking at data on the second stage pressure decay that we saw."

On Saturday, SpaceX decided to cancel the webcast of the launch and did not explain its reason for doing so. But the launch was unsuccessful again.

SpaceX attempted its fourth launch on Tuesday but failed again due to cloudy skies. Officials then announced that they would delay the launch until the first week of July, Reuters reported.

"We ... will work with the Range to confirm the next available launch opportunities," the company wrote in its website.