RE: P-200SX
Staale,
You have got the flow at the nominal pump voltage: 750ml/min @ 5,5V.
The problem comes from the engine or the ECU. Could be a RPM sensor problem, or some kind of software bug.
You have to send the engine + pump + ECU to Jetcat. The valves are fine with the small nipple and have proven reliable operation.
Good luck