Quote:
Originally Posted by ChevyTech
If it can only produce 15 PSI even with the return line blocked, my guess is they are selling you a pump for a TBI truck, and a crappy pump if it can only produce 15 PSI.
You should get full battery voltage to the fuel pump when testing.
11.2 volts is way low. Charge the battery up, or replace it if it won't charge up to around 12.6 volts with a good charger.
|
That's what I thought about the TBI pumps. I know those put out around those numbers. It seems the numbers are correct from what I could find, but maybe carter pumps had a really bad day and marked a bunch wrong, lol.
The battery is at 12.3 volts. I checked voltage at the truck end of the connector at the tank where the sending unit plugs into. 12.2 volts while priming on the green wire (left pin), 8.2 volts at the red wire (center pin) w/ key on and 7.3 while cranking, right pin (black wire) seems to be a ground, checks out OK. I didn't pull the pump back out to test at the connector there.
Should I get full voltage constant at this connector, or only while priming?