HARD TO START

2002 Hyundai Sonata

Tiny

bowdog

June, 11, 2010 AT 5:01 AM

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.

FOUND 3594 RELATED QUESTIONS

1991 Hard To Start

41 ANSWERS
4 IMAGES

Engine Does Not Stay Running

33 ANSWERS
8 IMAGES

1 Answer

Tiny

rasmataz

June, 11, 2010 AT 5:24 AM

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

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Fuel Pump Replacement