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The mkiv Supra Owners Club

guys help a girl out....stock fuel pressure at idle...urgent!!!!!


tephanie
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Info from USA Supraforums

 

Toyota GTE Service Specs...

 

Fuel Pressure at Idle w/vacuum hose disconnected is 33-40psi (2.3 - 2.8 kgf/cm)

 

Fuel Pressure at Idle w/vacuum hose connected is 24-31psi (1.7 - 2.2 kgf/cm)

 

Correct fuel pressure at idle doesn't necessarily confirm a correct fuel pressure at boost. Fuel pressure should always be 36 psi. above the intake manifold boost pressure at all times.

example...10psi boost =46psi FP, 15psi boost=51psi FP, 20psi boost = 56psi FP

Toyota GE Service Specs...

 

Fuel Pressure at Idle w/vacuum hose disconnected is 38-44psi (2.7 - 3.1 kgf/cm)

 

Fuel Pressure at Idle w/vacuum hose connected is 28-34psi (2.0 - 2.4 kgf/cm)

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