Quote:
Originally Posted by MDPotter
And do these Gen V's run off variable fuel pressure? It's my understanding that Gen III's and IV's require a constant 58 psi, but the reading on my Gen V was anywhere from 40 to 70.
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I'm sorry to dissect your post, but there is so much good data in it that I want to address it point by point, you did awesome!
Honestly I know nothing about the Gen Vs, that will be a Tutorial written by you, ha ha.
As far as the Gen III's it is my understanding that they came in two flavoures: fixed and referenced
These are commonly referred to as returnless style fuel pressure system aka one fuel line (think Corvettes and Camaros with true 5.7L LS1/LS6 engines) and return style aka two fuel lines (these would be our truck engines 4.8L LR4, 5.3L LM7, and 6.0L)
These setups allow one to flow constant pressure at all times while the other is vacuum pressure regulated.
here is a sample
2000 Camaro Injector Flow Rate vs KPA table