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2002 Hyundai Sonata Repair Question


Topics covered: Fuel pump, Engine, Engine performance.
Mileage: No information provided.

Asked on June 11, 2010

2002 Hyundai Sonata hard to start

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.
Avatar Asked by bowdog

Answer

Replied on 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

Tiny Answered by rasmataz
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