Quote:
Originally Posted by clay68c10
I've replaced a zillion in-tank pumps at work in the past 8 years turning wrench professionally. I've replaced 2 external pumps and they were just for bleeding off residual pressure when the car was shut off and causing a slow to start condition. Most of those internal pumps were for outright failure and required the car to be towed in.
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That's pretty much been exactly my experience too. Replaced many dozens of in-tank pumps. Very few external pumps. Doesn't matter what the system pressure is; the in-tank pumps aren't nearly as reliable.