Fuel pressure drop/going lean above 5k
(Solved?) Fuel pressure drops to 20PSI after a few minutes when ...
That's ABOVE my long term trims being elevate 107 and 132 for front and rear. Running really lean possibly due to low pressure. At idle ...
CIS running lean at high RPM - the Pelican Parts Forum!
Under load (track or rolling dyno) the engine runs very lean (40+hp loss) above 5,000 rpm. ... "System" fuel pressure is within range at all of ...
need help diagnosing a problem..running lean - MY350Z.COM
If you had an injector that was clogged it would not cause a drop in pressure. That injector would be using LESS fuel so it would actually cause ...
leaning out under boost - www.ka-t.org
The response for most fuel related problems is a boost leak, BUT a leak of air after the maf would cause RICH conditions, not LEAN.
Fuel Pressure Drop Issue FIXED... Kinda!!! Rail Restriction? - YouTube
LS Swapped Ranger Fuel Pressure issues is fixed. I was having issues with fuel pressure dropping causing a fuel starvation issue at the rail ...
Weird Fuel Pressure Problem | Honda D Series Forum
Fuel pressure should hold generally for 10-20minutes and slowly decrease there after. If it's dropping to 0 immediately you have a problem. I ...
help! running lean and not holding fuel pressure. - LS1GTO Forums
Something isn't seated correctly or leaking causing flow to be bypassed. The fuel pressure should not drop that quick after turning the car off ...
Super Lean up top - Suzuki Hayabusa.org
If your fuel pressure is dropping as you rev it up then, you pump is not keeping up with the flow. Could be too small pump, blockage, leak at ...
Low fuel pressure - General Mooney Talk - Mooneyspace.com
Since the fuel flow and consumption is normal, it's not something clogging the fuel servo or divider. If it was a blockage before the electric ...
L28ET Running too lean! - ZDriver.com
So last fall I decided I needed to up the fuel pressure a lil, as my L28ET would lean out at full throttle above 5000rpm. I was looking for ...
914World.com > Possible Lean condition in L-jet motor - HELP
That means the fuel pressure rises under load (AKA "demand") If you have a set fuel pressure at idle, it won't meet the demand under load. That' ...
New combo is running lean, calling for help! - TurboFord
... 5000 rpm and up. Increasing pressure at the rail has no effect on the mixture above 5000rpm. I have read in previous posts that the stock 84-85 svo dual pump ...
C7 Z06 Hesitation at WOT - HP Tuners Bulletin Board
basically the fuel was not available and the boost dropped off (assume the computer avoids going lean) ... (high pressure fuel pump too low). Thus, ...
Engine running lean and bogging down? 1991 4.0
Check the fuel pressure. 31 psi with the vacuum line connected to the fuel pressure regulator, 39 psi with it removed. The system holds pressure ...
Low fuel pressure - YotaTech Forums
This is because the pump produces well over 44psi, and the regulator "dumps" what it doesn't need. If you get no (or very limited) flow on the ...
Fuel Pressure Problems? | Can-Am ATV & UTV Forums
The fuel pressure drop is not normal. I rode around with a gauge on mine one day and it was always over 50 psi.
Running Lean at 6 - 7K - Turbo / Supercharger - HybridZ
The stock pump bypasses around 60psi... 65>60, you are running LESS fuel through the injector as a function of decreased delta across the ...
Running Lean | MR2 Owners Club Forum
Fuel pressure should be rising at the same rate as boost, so at 15psi you should be seeing 60psi fuel pressure. That could be part of your ...
What could cause high fuel delivery, but still lean condition under ...
Another problem could be that the fuel pump is not keeping up under load, causing a pressure drop under load. What do you mean by a humming ...
Running lean above 3700 RPMs - RX7Club.com - Mazda RX7 Forum
Maybe you're not getting enough fuel up there. Those are some huge injectors. What kind of pump are you running? You might want to look into ...