LONDON (AFP) - Crude oil prices fell Tuesday on concerns for the US economy, despite a critical debt deal to avert a default, analysts said. New Yorks main contract, light sweet crude for delivery in September, slid 75 cents to $94.14 a barrel. Brent North Sea crude for September shed eight cents to $116.73. The threat of US insolvency would appear to have been averted, but the worry now is the countrys economy, said Commerzbank analyst Carsten Fritsch. The US economic growth figures announced last on Friday were highly disappointing, and then yesterday it was revealed that the purchasing managers index for manufacturing had taken a dive. As a result, oil came under pressure. Trading had been very volatile on Monday, initially rising after the US reached an 11th-hour deal to avert a potentially devastating debt default in the worlds largest economy. They later retreated after data showed US manufacturing slowed to a near standstill in July. # #, highlighting increased and deep-seated concerns about the economy.