Posted by Mike H (MO) [172.68.58.156] on Wednesday, October 19, 2016 at 07:39:29 :
In Reply to: Cummins 4bt issue on off road slope. posted by Bruce in sunny BC [108.162.244.24] on Monday, October 17, 2016 at 23:16:20 :
I think the leaky fuel line is hinting at something. Could the fuel line be getting kinked or pinched from chassis or body movement? I can't think of how but even a kinked return line might cause troubles. I know I get a fair amount of chassis flex off road and the cab does move a little. I would try a pressure gauge on the feed first them maybe install on the return line to see if it is getting back pressure. I know that true fuel pressure gauges typically have to have isolators for safety. I used a cheap boost gauge which also has negative and no isolator so they are only about $20. I figured diesel is safer than gasoline if the line leaks and also I don't even have a top for my truck so it wouldn't be confined if I have a leak. Probably will need a friend to ride and watch the gauge if you are climbing anything serious off road so you can watch the trail!!