testing fuel pressure

I want to test fuel pressure. The crank time is longer when it's been sitting a short time vs immediate restart, and a poster here suggested it's pressure bleed off.

I'm having a hard time finding instructions online for this model, and the FSM is confusing to me.

I'll start up with the EFI fuse removed to depressurize the line, and disconnect the battery.

The FSM page below says to take off the timing belt cover and references their special parts that are discontinued. But it sounds like any old fuel pressure testing kit should have everything?

In one video a guy pointed to a totally different spot on the passenger side near the evap canister. I marked a spot with an arrow in my own pic below that I think is a fuel line and I could probably disconnect and put a T in. Is that right?

I don't think I have the right fuel pressure gauge. Pic below also. It has a hose and a few connectors but only goes to 10 PSI and doesn't have all those other hoses and connectors I've seen in some kits.

 

testing it at idle instead of at full throttle in gear you will get two different results,

I had a fuel pump going south,
At idle it tested good but at WOT it could not keep up, FYI

 

I would not break that double flare you've got circled...

Being so old it may not reseat correctly......
I had to replace that exact hose after dicking with it..........$215 from yota shop....
and it was the only one in U.S. at the time.......

it was damaged sometime in past and they fix it by over tightening it.....one shot fix...

 

Lc engineering sells a pressure tap for 2rz/3rz.....
goes under the pressure regulator....
dont know if it can be adapted to 5vz...

Fuel Pressure Gauge Kit 2RZ/3RZ (lceperformance.com)

 

A lot of times they over tighten that double flare trying to get it to stop leaking.....

case in point.....

(610) Toyota 4runner 5vz-fe Fuel Pressure Regulator and Stainless Steel Braided fuel hose. - YouTube


If you should ever have to break one of those old double flares.....these are a safety net to keep from having to over tighten again......these are like gold....and priced to match....

Santech Washer No 6 Flare 5 Piece (autozone.com)

 

I'm confused. So there's no way to test fuel pressure without breaking and replacing some expensive parts? I still don't understand what kind of gauge kit or other adapters I need or the location to best take apart. There's no parts available to do it the way the FSM suggests?

 

Toyota did not make it easy......
easiest thing I know to do is you can check for fuel flow by pulling the fuel return hose off the pressure regulator....and stick a long hose on that reg nipple and crank and check for fuel flow.....it should come pouring out.......


Yeah they made their fuel delivery pretty robust.......you never hear of engine fires on toyotas.......unlike the new bronco sports......

 

For my symptom it sounds like it's almost always the fuel pump check valve failing. I don't have symptoms of a bad fuel pump or pressure regulator, just a long crank time of 6 crankshaft rotations after it's been sitting for maybe an hour(?).

To avoid dropping the tank, I found a cheap idea of installing an inline check valve on the rubber fuel hose between the tank and filter by the method in this video. It looks like I could do this on mine. My concern is the bad check valve by the pump is still going to backflow the fuel located between it and the new inline check valve, creating an air bubble. Is that bubble going to cause the engine to stumble, or will something get rid of that bubble and the fuel flow will be steady?

https://youtu.be/STIQa1ct_5s

 

Update, I fixed the cranking issues. https://www.tacomaworld.com/threads/fyi-new-fuel-injectors-solved-problems.824629/