The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - What did you do with your truck today, Part 3

evilokc · 11-12-2017, 01:16 PM

spent the afternoon trying to get my fuel pressure right. I set it at 6spi and after driving a bit it seemed to labor at idle. I got out and looked and the fuel pressure had dropped to 4psi. as it idled the pressure rose back up to 6psi and the idle returned to normal. this continued to happen. I kept trying to raise the fuel pressure but once the truck started driving the pressure would shoot up. I finally raised the float level a small amount and set the pressure at 6.5 and that held for the very short drive. I'm testing again today. I hope that's issue fixed. spending 3 hours on something a silly as fuel pressure is dumb. the little things eat so much time. I replaced the throttle cable and bracket last week and believe I need to re-adjust the accelerator pump. I'm getting close though. the throttle feels great and besides this small fuel pressure thing the truck seems pretty happy. the flooding issue seems to have been corrected by the new needle and seat.

11-12-2017, 01:16 PM	#562
evilokc Registered User Join Date: Mar 2013 Location: albuquerque New Mexico Posts: 522	Re: What did you do with your truck today, Part 3 spent the afternoon trying to get my fuel pressure right. I set it at 6spi and after driving a bit it seemed to labor at idle. I got out and looked and the fuel pressure had dropped to 4psi. as it idled the pressure rose back up to 6psi and the idle returned to normal. this continued to happen. I kept trying to raise the fuel pressure but once the truck started driving the pressure would shoot up. I finally raised the float level a small amount and set the pressure at 6.5 and that held for the very short drive. I'm testing again today. I hope that's issue fixed. spending 3 hours on something a silly as fuel pressure is dumb. the little things eat so much time. I replaced the throttle cable and bracket last week and believe I need to re-adjust the accelerator pump. I'm getting close though. the throttle feels great and besides this small fuel pressure thing the truck seems pretty happy. the flooding issue seems to have been corrected by the new needle and seat.