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Re: Which fuel pump is which?
Try hooking up a fuel PSI gauge on your schrader valve on the fuel rail, if you have one, my 04 doesn't. Drive around and see if your fuel pressure stays constant or drops under load, you could also try just brake tourqeing it if you cant drive around, put in gear and hold brake down and give her a little gas to put some load on the engine. But again I would check fuel PSI before dumping money in pumps.
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