Simple stator test.... You should have a ohm reading between the brown wire and the brown/yellow wire. You should not have a ohm reading between either of those wires and ground.
Also, do a visual check of the stator to make sure that it isn't cracked and dripping a sticky looking substance down upon the powerhead area.
However..... your explanation of the problem does not indicate a stator problem, it does indicate a fuel restriction problem, especially when you say all was well until you did some work on your built in fuel tank. Note that there are two different ID size fuel line hoses... the V6 engine demands the larger size. If you installed the smaller size, therein lies your problem.
It's possible that you may have either kinked the air vent hose or the fuel line, or the anti siphon valve is sticking. Do you receive any kind of warning from your warning horn setup? Check to make sure the warning horn is functional as follows.
Engine not running, key in ON position, ground out one of the TAN wire that you see protruding from the cylinder heads (heat sensor). The horn should sound when that TAN wire is grounded... if it does not, find out why.
Note that the fuel primer bulb normally has a tendency to flatten out when a fuel restriction takes place.
