If the engine cranks but does not start, it may be caused by a tripped inertia switch. Switch the key to "ON" and the fuel pump should be heard running for a second or two. Listen at the gas filler if necessary. The inertia switch is located on the firewall and can be tripped when the parking brake is set too hard and then released. The inertia switch should be reset, and will click when it is reset.Google+
Car Problem Reports
Mazda B3000 Crank but No Start Condition
Mazda B3000 Problem
driving and engine went dead checked inherta switch its fine need to find relays and fuses to check before buying fuel pump
Where is the inertia switch located?
Visitor, 1994 Mazda B3000
Crank but will not start