PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Car running VERY lean for unknown reason. Help!

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Dec 5, 2004 | 02:46 PM

#21

Ed FvC

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Checked the fuel pressure today... 60psi at idle. However, with a key on/engine off test, it jumped up to 55psi and dropped quickly below 45.

Fuel pump or pressure regulator going bad?

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