Solution to solve the water pump problem: We have done many tests this week, we think the inner wiring of the control box might be incorrect, I'll send you a new control box with correct wiring for your review, change control box wirings exactly same as the one I send you, the engines will work well, check attached photos and video. Pls convey my sorry to Ms.Emmy&your company about the inconvenience due to this problem, we'll improve the testing technology of water pumps with oil sensor system, the pistons will be sent together with the new control box.
Reasons that we think for this problem:
1.The standard design of water pumps are without oil sensor system, so standard testing is fine for standard design water pumps.
2.Our standard testing way of water pump is test the water pumps specs without control box, which means incorrect inner wiring of control box will not be figured out, that's the main reason of this problem, we think there must have been a wire connected to the off connector, so engine stop immediately as a protection with wrong signal.
3.The reason of long-time-discussion, at the very beginning of Ms.Emmy's emails, both your company and mine are thinking about the solenoid valve problem which might happen, it cost a very long time for the communications, then you had Thailand New Year, we had Canton Fair.
Here's compensation way:
1.The 90-pcs solenoid valve&5-pcs fuel pump assembly I already sent you as free parts to you, you won't have to change the solenoid valves or fuel pumps, the problem is about wiring.
2.The labor costs due to wiring changes will be deducted in next order.
3.Our testing way of the water pumps with oil sensor system will be improved, this problem will not happen again.