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Posts Tagged: engine cranks but won’t fire up

Engine cranks but won’t completely fire up

Engine cranks but won’t fire up When an engine cranks and starts to fire up but can’t quite keep running, the problem is usually caused by a air/fuel fuel issue rather than an electrical problem like worn spark plugs. The proper air/fuel mixture is especially critical on a cold start. If there’s too little fuel it can’t keep the engine running. If there’s too much fuel, the engine will flood. Here are the most common suspects: • Dirty throttle body • Dirty idle air bypass valve • Vacuum leak • … Read More

Car won’t start —Engine cranks but won’t fire up

Engine cranks but won’t fire up Here are the most common causes of an engine cranks but won’t fire up condition: • Blown fuel pump fuse • No fuel pressure or low fuel pressure • Bad engine coolant temperature sensor • Flooded engine • Worn spark plugs No fuel pressure or low fuel pressure IF a fuel injected engine doesn’t have the proper fuel pressure, it won’t start. To maintain fuel pressure, carmakers install a check valve in the pump that prevents all the fuel from draining back to the … Read More


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