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Old 11-08-2013, 11:25 PM
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madmike madmike is offline
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Default Re: Hard Start only when warm H2 2003

Same problem here. If i turn key on / off three times, it seems to start right up telling me it is probably the fuel pressure regulator or fuel pump. Its like charging the entire fuel line every time you start it. More than likely the fuel pressure regulator or leaking injectors as the fuel pump delivers plenty of fuel and power at full throttle cold or warm. I checked the fuel pressure when running and its close to 40 psi. if it sits for a while it drops to nothing. Pressure regulator may not be holding the pressure in the ports or the injectors are stuck open releasing pressure.
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