install,
Do you have a 125 PSI pressure gauge you can attach to the output of your in tank fuel booster pump
before you drain the tank and remove it.
Since it runs for a short time then quits, there could very well be a safety feature built in to prevent the pump
from dumping fuel all over if the line comes loose and it does not build pressure quickly enough.
Complicated, yes, but MB has built in rollover vent valves and lots of other safety stuff that only
deploys in the event of an accident that requires the device to keep fuel from spilling and starting
a fire.
The output from the in tank pump should be in the 75-95 PSI range, and it should build head pressure in
a few seconds.
Hope this helps,
Roger