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when the car fails to start, usually this is because there is no fuel being delivered.
the most common cause of this is a faulty fuel pump check valve that allows fuel to drain back into the tank, or one or more leaking fuel injectors which allows the fuel to leak into the engine.
to check for this, fuel pressure needs to be tested and monitored while the car is running and then monitored after the engine is shut off to see if it bleeds off.
this is the testing that needs to be carried out at this time
other possible causes would be a faulty temp sensor or possibly a weak battery or starter,
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