but to the important question, it does sound like the pressure is lower than desirable, it should be able to keep 5-10# idling when well warmed up, and maybe 30# or more at higher rpm - the speed you've been traveling shouldn't really make that much of a difference .... might start looking for a replacement engine for when you do hear that death rattle wink

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics