Yeah, that was published when I was still in high school and digital multimeters were new and fancy. A digital multimeter will read 0.0 ohms, or I'm trashing the leads and buying new ones.
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So both NEW FPR's will not build pressure over about 46psi even though they are advertised as 57psi regulators.
The old regulator builds to 56psi and runs at 52psi. Still a little low.
So i left the old regulator installed. Truck still idles a little rough but it is better for sure. Maybe over the next few days it will get better as the ecu learns the new fuel pressure/trims?
Also i guess with old eyes and bad lighting there were 2 little O rings in there. 1 in the proper spot and the other was floating around inside but i'll claim a senior moment!
I think the last 2 months the miss and rough idle problem has always been low fuel pressure problem that i never really suspected.
I'm pretty sure everything i have done in the last 2 or 3 months was a waste of time and money.
I can't seem to find a correct answer for fuel pressure. some say 52-56psi and some say 62-68psi and everything in between.
Your fuel pressure is definitely far out of spec. It should be 58-62 at idle. There is a 44psi regulator that will physically fit. You were probably given the wrong one when you replaced it last year. The correct one for the L29 is FP10021.
The last 454 I had a hand in messing with, we put the fuel pressure at 58 psi and used LS injectors. 58 psi is what the LS injector data is calculated around. I purposely had him set it up that way so that I was not fighting bad injector data getting the tune right. The regulator I linked is at 58 psi on my Van, KOEO.
Mine has an allen key in the center of it. I had to search to find a vendor selling this unit with their own pictures. Mine is nearly impossible to get a good picture of now. Mine was set for 58 psi out of the box.I'm confused....says stock pressure, and I'm not seeing a way to adjust it.
Exhaust valves that aren't "white" have problems. The exhausts get blow-torched every time they open. Nothing on them but ash.i took some valves out of the heads of my old engine.
Been a long time since i looked at valves but from what i remember being this white is a sign of running lean?
Ever since they took the lead out of gasoline, plug porcelain color has been pretty meaningless. Sometimes green or orange depending on fuel additives. Mostly just plain white unless they've got a lot of miles on them, and then light-grey.here is a set of old plugs i had in my new engine for a few weeks to see if the new plugs were bad. Hard to tell anything as they looked about like that when i put them in.