Here's how I check rotor clearence in the pump. I did a write up on it on my Facebook page last week. Use shim stock, very cheap, and a piece of glass or granite block. Stack shim rotor and pump up, see if the rotor is free, has drag, or is bound up.
The pump I was working on was from a name brand vendor and was way too loose. Hence why I do all my own builds/work and somehow landed up doing this as a full time job...lol
The pump I was working on was from a name brand vendor and was way too loose. Hence why I do all my own builds/work and somehow landed up doing this as a full time job...lol