my gauge for the fuel pressure at the regulator is fluttering about 6 - 8 PSI around 40 PSI
How steady is the fuel pressure typically?
If this is not normal -
I wouldn't think the problem is the fuel pump, Im thinking the pressure regulator may be slow to respond and causing the fluttering??
Moderators: EDS50, cgrey8, 2Shaker, Jon 94GT
-
Cruisin428
- Gear Head
- Posts: 9
- Joined: Mon May 07, 2018 9:41 pm
fuel pressure fluttering
347 AFR 205cc Race Heads cam?? 90mm Ford MAF siemens deca 60lb injectors MSD Dist & 6AL Vortech V-3 Headers to side pipes- Stick shift
No A/C, EGR or Smog at all
No A/C, EGR or Smog at all
-
cgrey8
- Administrator
- Posts: 11304
- Joined: Fri Jun 24, 2005 5:54 am
- Location: Acworth, Ga (Metro Atlanta)
- Contact:
Re: fuel pressure fluttering
If this is at idle, you may be seeing the high speed fluctuations of your intake manifold pressure. And being the fuel pressure regulator's job is to have the fuel pressure track with the fluctuations in the intake manifold, this may be what you are seeing. However I would expect that at higher RPM/Loads, you'd see this smooth out a bit. But at lower RPMs where reversion is going to be the most pronounced, it's not surprising particularly if your vehicle has an aggressive, wide duration cam.
...Always Somethin'
89 Ranger Supercab, 331 w/GT40p heads, ported Explorer lower, Crane Powermax 2020 cam, FMS Explorer (GT40p) headers, aftermarket T5 'Z-Spec', GUFB, Moates QuarterHorse tuned using BE&EA
Member V8-Ranger.com
89 Ranger Supercab, 331 w/GT40p heads, ported Explorer lower, Crane Powermax 2020 cam, FMS Explorer (GT40p) headers, aftermarket T5 'Z-Spec', GUFB, Moates QuarterHorse tuned using BE&EA
Member V8-Ranger.com
Who is online
Users browsing this forum: No registered users and 28 guests