Hello, i am back to annoy you good folks for expert information. my problem at the moment seems to be fuel starvation, the motor runs perfectly for many miles then it starts to splutter and comes good again. when doing some basic tests all seems ok. i will attach another pump that i have on a different circuit and switch so if this happens again i can activate the other one and that might show the problem. now can i attach this second pump in the line to go through the SU pump or will i have put two T pieces in one for and aft the suspect pump. thank you in anticipation for your guidance. best regards and stay safe.