Hi Peter

"Someone may come along soon and suggest fuel flow although to be honest I can never understand the correlation between flow and pressure"

This may be a good one for the Technical Theory board

I have been reading through a very long thread on iATN about this very subject, here is a good quote:

"The best way to demonstrate it, take a water hose and barely turn the water on and put your thumb over the end and notice how much pressure you know have, but you have almost no volume of water coming out of the hose, same with fuel, you can have a clogged filter and plenty of pressure but not volume"

I think many Techs struggle to get their head around the pressure and flow thing

So is using just a Fuel Pressure Gauge enough? or do you always need to check the flow as well (under load) ie: with a Coda

Peter