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.
Crank but No Start Condition and No Fuel Pressure on Mazda B4000
Average mileage: 137,285 (54,000–208,000)
24 people reported this problem
2 people shared problem details
1994 Mazda B400054,000Visitor
Fuel pump inertia switch trips often. Will not re-set. Reset Button stays "mashed".
2000 Mazda B4000127,000Visitor
Cranks but won't start
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