Tintop has been running a little hesitantly of late. Having encountered a similar problem in a work vehicle recently, I suspected the fuel filter might need draining.
The manual states that there is a bleed screw which needs to be undone prior to removing the drain screw underneath. What is/where is the bleed screw??? Draining plug is easy to locate, but atfer all the gunk comes out, the flow stops (negative pressure, as whatever other 'screw' I've undone makes no difference.
Help!