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350matt, Engineer
Category: Hyundai
Satisfied Customers: 21872
Experience:  Mechanical Engineer BEng Hons 22 years experience in car engine industry, 10 years in formula 1
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Ive changed the fuel pump fuel filter and done a full major

Customer Question

Ive changed the fuel pump fuel filter and done a full major service but it wont fire up unless i aerostart it and once i stop the aerostart the car dies
JA: Is the fuel filter an external one, or is it inside the tank?
Customer: In tank filter I can hear the fuel pump prime also
JA: What is the model/year of your Hyundai?
Customer: 2004 elantra 2 litre
JA: Are you fixing your Elantra yourself? What have you tried so far?
Customer: Yeah i am. Ive done the fuel filter cleaned the maf sensor
JA: Anything else you want the mechanic to know before I connect you?
Customer: Ive also done the air filter and it only runs on aerostart
Submitted: 1 year ago.
Category: Hyundai
Expert:  350matt replied 1 year ago.


I'd say its very likely that its not getting fuel up to the engine? so I'd suggest to ideally to measure the fuel pressure at the injector rail to confirm that the fuel isn't coming through and if this is true then I'd remove the fuel filter assembly again to confirm that the filter sock is fully home and not distorted in any way and so choking the pump

Expert:  350matt replied 1 year ago.


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