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Make sure you grabbed the return line and not the vent line. Also, when you changed out the pump, was there an obvious size difference? Did you have to spice on the wires? My pump whined real bad, could even hear it over the obnoxious flowmaster. Took it out to put a denso unit in ($150, packaged as another brand, but said denso on it), and found out I had a crappy walbro universal pump in there. Half the size of the denso unit, and had to be spliced in. Put the denso unit in, no whining, truck starts better.
Yeah, if you disconnected the return line at the regulator and nothing came out, but the truck runs, fuel is in the rail but not getting out. Before you buy a new one remember that all (I think) are the same, even on the 22re celicas, so maybe a used one or two from the junkyard could be ok. Check the price first, if they aren't bad just get a new one.Also, did you check to see if you were getting vacuum to the regulator? I have my doubts about no vacuum at the regulator completely closing the regulator, but it would be a good thing to check.
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