19 hours ago19 hr comment_676124 IMO I don’t think so. Others will chime in. Pressure doesn’t change under load. I think you have issues you haven’t looked into yet. Link to comment https://www.classiczcars.com/forums/topic/69175-loss-of-acceleration-when-hitting-gas-hard/?&page=3#findComment-676124 Share on other sites More sharing options...
18 hours ago18 hr comment_676125 3 hours ago, gotham22 said:. At idle, the pressure reads 32 psi. When I manually move the throttle, it increases to about 38 psi.This normal. It also shows (edit) pretty good intake system vacuum. 30 psi or below at idle is normal. Have you adjusted the valves recently?If I had this problem I would check the TVS (aka TPS). Make sure it's working right at open throttle. It's what adds the extra fuel. Your fuel pressure looks good. Edited 18 hours ago18 hr by Zed Head Link to comment https://www.classiczcars.com/forums/topic/69175-loss-of-acceleration-when-hitting-gas-hard/?&page=3#findComment-676125 Share on other sites More sharing options...
17 hours ago17 hr comment_676126 On 5/6/2025 at 2:55 PM, siteunseen said:Hooking up a vacuum gauge is somthing else that helps find problem. You can get them at chain stores with loaner programs for free.Here's the link -https://www.atlanticz.ca/zclub/techtips/vacuum/ Link to comment https://www.classiczcars.com/forums/topic/69175-loss-of-acceleration-when-hitting-gas-hard/?&page=3#findComment-676126 Share on other sites More sharing options...
15 hours ago15 hr Author comment_676127 I am going to check the afm and tps next just to rule those out. Link to comment https://www.classiczcars.com/forums/topic/69175-loss-of-acceleration-when-hitting-gas-hard/?&page=3#findComment-676127 Share on other sites More sharing options...
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