Low Fuel Pressure?
Thread Starter
Melting Slicks
Joined: May 2000
Posts: 2,161
Likes: 17
Low Fuel Pressure?
My fuel pressure has decreased since I first got my car. It used to sit at about 58-60 PSI, now at about 50-52 PSI. I have a A&A vortech supercharger kit and fuel pressure gauge. A few questions:
1) Can the fuel pressure gauge be incorrect?
2) Has anyone seen a reduction in fuel pressue like this and what may be the cause?
3) If the fuel pressure is really at 52 PSI, will it hurt the car to drive it?
1) Can the fuel pressure gauge be incorrect?
2) Has anyone seen a reduction in fuel pressue like this and what may be the cause?
3) If the fuel pressure is really at 52 PSI, will it hurt the car to drive it?
Pro
Joined: Nov 2007
Posts: 605
Likes: 15
From: Rocky Mountains Colorado
You need to validate and verify the accuracy of your current meter by comparing its reading with that of another meter (preferably a calibrated mechanical meter known to give accurate readings). If you are using a BAP, you may be witnesing the slow demise of your OEM Fuel Pump.
Former Vendor
Joined: Jul 2008
Posts: 4,327
Likes: 7
From: Oxnard SoCal www.aacorvette.com www.superchargersuperstore.com
My fuel pressure has decreased since I first got my car. It used to sit at about 58-60 PSI, now at about 50-52 PSI. I have a A&A vortech supercharger kit and fuel pressure gauge. A few questions:
1) Can the fuel pressure gauge be incorrect?
2) Has anyone seen a reduction in fuel pressue like this and what may be the cause?
3) If the fuel pressure is really at 52 PSI, will it hurt the car to drive it?
1) Can the fuel pressure gauge be incorrect?
2) Has anyone seen a reduction in fuel pressue like this and what may be the cause?
3) If the fuel pressure is really at 52 PSI, will it hurt the car to drive it?
If you want to swing by the shop, we'll take a look.
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Racer
Joined: Jun 2016
Posts: 291
Likes: 10
Mine is doing the same thing. I have upgraded the fuel pump to a lingenfelter high flow pump. I put a ECS stage 1fuel system in. Has double nozzle meth injection. Boost a pump. Still dropping to 51 psi. Could it be caused by stock rails? C6 manual 08. Checked wirhcother gauges and still says 51. Not running lean up top though
Racer
Joined: Mar 2016
Posts: 495
Likes: 35
Mine is doing the same thing. I have upgraded the fuel pump to a lingenfelter high flow pump. I put a ECS stage 1fuel system in. Has double nozzle meth injection. Boost a pump. Still dropping to 51 psi. Could it be caused by stock rails? C6 manual 08. Checked wirhcother gauges and still says 51. Not running lean up top though
Could be your fuel filter. rails would not cause it to drop.
Racer
Joined: Jun 2016
Posts: 291
Likes: 10
