Why did Benjamin Franklin travel to London in 1724?

In 1723 Franklin found a job in the print shop of Samuel Keimer: because of his skill at typesetting, Keimer paid him well. The governor of Pennsylvania soon took an interest in young Franklin and advised the boy to open a shop of his own. He sent him to London, England, to buy a printing press and type. The governor promised to pay the expenses. He did not keep his promise, however, and in 1724 Franklin was stranded in London with no money. he found a job as a printer and saved enough money to return to Philadelphia in October 1726. There he worked for a time as a sales clerk but soon went back to Keimer's print shop.