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Matt, Mechanical Engineer
Category: UK Car
Satisfied Customers: 21706
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Hyundai Tucson GLS: morninghave a 2005 hyundai tucson 2.0

Customer Question

have a 2005 hyundai tucson 2.0 gls
morning start up -- smooth -- sometimes does not want to rev up, switch off and re-start then its fine, idling fine, reving up fine.
driving it feels like misfiteing, sometimes backfire into air box, jerking.
up hill no power.
where do i start ????
Submitted: 2 years ago.
Category: UK Car
Expert:  Matt replied 2 years ago.
Hello can you tell me what engien is fitted please? the Petrol or the urbo diesel?
Customer: replied 2 years ago.
2.0 petrol
Expert:  Matt replied 2 years ago.
this sounds like a lack of fuel and could be a lack of fuel pressure from the electrical pump at the tank.
If the connections to the pump are corroded or damaged then the pump could stop at any time or could not be running at full speed. 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 pressure at the injector rail and if this is low check the pump as described and also consider changing the fuel filter as if this partially blocked this too will reduce pressure.
Expert:  Matt replied 2 years ago.
do you still need help ?