Spraying the lil 4.3... got ???s
08-24-2007, 12:41 PM
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Originally Posted by ChevyThunder17
That's correct; Central Point Injection.
Should be about 80+ psi. But I don't think you can remove the vacuum for the FPR.
Should be about 80+ psi. But I don't think you can remove the vacuum for the FPR.
Ok i was just wondering...
So when im tryin to find out what jets to use what Fuel PSI do i need to use?
08-24-2007, 06:04 PM
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Originally Posted by ChevyThunder17
You'll probably pull the fuel from that schrader valve, so 80 psi is what I'd base it on for the fuel nozzle.
I think i can do the COS and run it to pull timing when the arm switch is turned on... i think...
08-24-2007, 10:47 PM
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Originally Posted by ChevyThunder17
That's correct; Central Point Injection.
Should be about 80+ psi. But I don't think you can remove the vacuum for the FPR.
Should be about 80+ psi. But I don't think you can remove the vacuum for the FPR.
08-24-2007, 10:53 PM
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Originally Posted by Dogsofjune
That's not quite correct. It's CSFI. Central Sequential Fuel Injection on the '96 and newer 4.3's.
It's a really shitty system if you are looking to make power. You have no ability to up your injector size and the fuel pressure is already through the roof.
08-25-2007, 08:28 PM
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Originally Posted by ChevyThunder17
I was thinking of the 92-95's for some reason; yes, it's sequential, not port.
It's a really shitty system if you are looking to make power. You have no ability to up your injector size and the fuel pressure is already through the roof.
It's a really shitty system if you are looking to make power. You have no ability to up your injector size and the fuel pressure is already through the roof.
Fortunately, some of us with the 4.3 S-10's have overcome the fueling issue so we have the potential to make some power.
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