TwinTurbo.NET: Nissan 300ZX forum - Fuel pressure is 85psi at idle!!!!
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Subject Fuel pressure is 85psi at idle!!!!
     
Posted by poorkid_Z on April 25, 2014 at 12:35 AM
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Message Long story short I'm on a new build that sat for a few years. Im at 164 miles and had a few hiccups already. My current issue: I installed an electronic fuel pressure gauge and it read 85psi at idle if i blip the throttle it jumps to 100psi! Hoping I had a faulty gauge I hooked up a mechanical gauge. same psi reading :(

I removed the fuel pump and regulator and I blew through the fuel lines then blew with compressed air. no restrictions

I blew through the filter line, fuel rail.. no restrictions

I'm assuming either my regulator is bad or part# 17050-30P00 (called a JET FUEL PUMP Replaced by: A7050-30P00) on the fuel pump return is partially clogged? This little valve had the most restriction.

Any thoughts on how to test the regulator?

     
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