ok so i changed the fpr.. and the car ran and drove perfect.. for a couple rippers.. couple burn outs.. then it acted up again.. i put my old fpr back on and it was fine again for a couple rippers and a drive arround the block then it acted up again...

if i release the pressure in the fuel lines then tighten the fpr back up it will run and drive fine for like 2 minutes..

so im guessing a problem with the fuel return line lol

 

or did i change out my fpr with another bad one? i got it from the junkyard..

 

throw a 20$ vatozone fuel pressure gage on there and see what the pressure is doing during those 2 minutes.

have you replaced your fuel filter ever?

does your fpr have a proper vac line to it?

Did it always do this? Have you checked where the fuel line meets the rail?
-when I swapped out a blown ls for a b16 I used the stock ls fuel line. I fucked 2 things up a) I had the banjo bolt on upside down and it is not designed to go on that way b) I accidentally swapped the top and bottom washers.

That basically casued a huge restriction in the line and it fucked my flow up. Car idled fine but leaned out and fell on it's face under any load.

 

i have no idea what i did wrong but i just unplugged and replugged a bunch of vac lines today and the car runs and drives fine for the most part

now to get my iab's wired up, get the motorcycle battery on (still dont know if i wanna do this or not) then ill be 100% done

 

problem is back

 

Sounds like the car is fine if you let it cool for a moment, then acts up when hot. Electrical problems (bad or corroded connections) manifest like that.

 

problem? buk did a swap.

solution? listen to hmt.

 

commutator in fuel pump shot?

 

now the problem wont go away.. its not even about cooling down.. literilly 2 seconds it takes to unscrew the dampner to relieve pressure

apparently im a dumb *** and thought the dampner was the fpr..

anyways.. if i unplug the vac line to the fpr no changes in the car whatsoever.

is there a ground for the fuel pump itself... i redid all the grounds..

 

Between the tail lights.