return pump not performing

[sirruckus]

head height is about 4' - although that wont matter when comparing the same condition to a weaker pump

I would expect some loss with the 3/4" line, but not 600 gph loss
I'll try changing the intake to a straight run.

the only other thing I can think of - is the motor is going - is there a way to inspect, or test?

I would think with the motor, it would either work - or not work

[mark]

for a 90 on the inlet read different places 3-5 times pipe diameter for minimum length of straight piece between pump and elbow.

seen also in Red Dragon manual here, pictures and everything

[sirruckus]

saw that, threw on a straight pipe -minimal difference (but better)

just trying to see if the previous owner has put on a different pump head. right now I have a 1-1/4 inlet and a 3/4" outlet (I thought I was reducing it, but i'm not)

I thought I had found somewhere that it was a 1" outlet

[sirruckus]

I talked to the previous owner, great guy, he suggested it might not be performing because someone had run it dry for a couple minutes, and offered a full refund.