Mechanics

HARD TO START

2002 Hyundai Sonata

Engine Performance problem
2002 Hyundai Sonata 6 cyl Front Wheel Drive Automatic 101875 miles

I replaced my fuel pump once for low residual pressure, and my vehicle is still hard to start. Could it be the fuel psi regulator, and how can I test it.
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Bowdog
June 11, 2010.




Fuel injectors or the fuel pressure regulator is leaking. If the FPR is leaking you will see gas in the vacuum hose/nipple and also the fuel pump check valve and a leaky fuel line

Rasmataz
Jun 11, 2010.


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