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How long should fuel pressure hold with koeo

T

tweeder

New member
Mine goes from 42ish down to zero in just under a minute. Not sure if something's wrong with the pump or not.
 


It keeps up at idle and goes up with a manual rev of the throttle. So I assume it's keeping up at wot. It's an aftermarket race pump, 300lph.
 


i forgot to mention that it has a new fuel pressure regulator. I also have the pump assembly out and in a bucket of fuel, how do i test it and what am i looking for?
 
i have yet to see a high flow aftermarket pump with the anti bleedback valve blocking/restricting that tiny ass fuel feed nipple.

1 minute bleed down is quite good for not having the oem checkvalve (which is the only way the system will hold pressure longer than a minute...)

the cure is a change in your starting tactic/training yerself.

key on, pause for 1-1.5seconds (as the pump nears the end of prime, then start cranking either after its stopped priming, or before if you get really good at it (might as well save yer FP relay some wear and tear)

you get used to it.

or you can kneecap your sweet high flow pump down to 180lph by reinstalling the factory checkvalve.

id compromise on the startup sequence...

in short...your fine as long at KOEO yer FP is 48-52 ish or ~58ish on the deadhead fuel system cars (04+)
 
Turbocharged400sbc said:
i have yet to see a high flow aftermarket pump with the anti bleedback valve blocking/restricting that tiny ass fuel feed nipple.

1 minute bleed down is quite good for not having the oem checkvalve (which is the only way the system will hold pressure longer than a minute...)

the cure is a change in your starting tactic/training yerself.

key on, pause for 1-1.5seconds (as the pump nears the end of prime, then start cranking either after its stopped priming, or before if you get really good at it (might as well save yer FP relay some wear and tear)

you get used to it.

or you can kneecap your sweet high flow pump down to 180lph by reinstalling the factory checkvalve.

id compromise on the startup sequence...

in short...your fine as long at KOEO yer FP is 48-52 ish or ~58ish on the deadhead fuel system cars (04+)
Click to expand...

Ok thats good to know, thanks. I have no problem starting as soon as i turn the key
 
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