I just finished installing braided hose fuel lines between the flex hose by the alternator and the TBI unit.

I installed a fuel pressure take off adapter (1/8 npt female) and gauge (1/8 npt male) at the connection near the alternator. When I start the car, the gauge doesn't seem to work (stays on zero).

I do believe I have the gauge on the inlet side since the hose its connected to runs to the passenger side opening on the throttle body. The car runs fine so I know the hoses aren't reversed.

Do I have a bad gauge or do I need to move the adapter and guage closer to the TBI unit in order to get a reading?

 

Make sure you have it on the larger hose, that is the feed side. Other than that, yeah it sounds like you got a bad gauge. It should give you a reading anywhere in the line on the feed side. I've had them connected just after the filter under the car and gotten a reading from it(was checking to see if the filter was clogged). As close as possible to the TB is the most accurate place, but anywhere close by should work too.

 

Ah, so the larger line is the feed side, which goes to the drivers side port on the TBI. I was thinking the pressurized side would be smaller. I'll do the swap tomorrow - thanks!