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Matt, Engineer
Category: Car
Satisfied Customers: 21727
Experience:  Honors degree in Mechanical Engineering, worked 8 years as a Formula 1 engine engineer.
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Buick: My Land Rover Discovery 1991 fuel getting to the engine

Resolved Question:

My Land Rover Discovery 1991 V8 with the Buick Engine will not start! She is turning over
but there is no fuel getting to the engine! is there a comon Fault with the pump or any
other part?
Submitted: 6 years ago.
Category: Car
Expert:  Matt replied 6 years ago.

its worth checking that the electric pump that feeds the injectors is working correctly, it should run for a few seconds then switch off when you first turn the ignition on. If the connections to this are corroded or damaged then the pump could stop at any time. Check that its relay switches in and out and the relay contacts are clean and bright – replace the relay if in any doubt and do the same for the fuse, ideally measure the voltage at the pump and check its getting 12V.

You should be getting around 3 bar measured at the injector rail ( this figure varies from car to car ) check to see if the plugs are getting wet indicating fuel is flowing – if not and the injectors are opening then there’s a problem with the pump or the filter or even the pressure regulator

if the injectors are working you can hear them click - its difficult to hear them with background noise so use a long screwdriver like a stethoscope, placing the handle end in your ear and the metal tip against the body of the injector whilst your assistant turns the engine over. Also check the ECU power relay and fuse and crank speed sensor connections
Customer: replied 6 years ago.

Hi Matt we have in the moment subzero tempreture is there any chnce the fuel pipe

could be frozen hence no fuel?

Expert:  Matt replied 6 years ago.

Its unlikely as petrol needs to get down to about -70 °C to freeze
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