damnit, I think I have the same problem -__- fuel pump hasn't been touched since the swap which was probably about 5-6 yrs ago...

thank God I looked at this thread lol

 

so far some good info....

 

I literally changed out everything that had to do with the motor, I mean everything.Checked all wiring. I compression tested it also and it was perfect across the board.

Only things I had left were:
Knock Sensor
02 sensor


But before I did that, I was like hmm let me just check the fuel pump. Sure enough I pull it out and it is green/black. I dont think it was ever changed. Put in my walboro ran like a fucking champ.

 

had a similiar issue with my sr. If I full throttled the car would break up like a boost leak. Did a boost leak test an it was all good. Checked voltage to cas, tps, an maf all good there. Changed fuel filter an plugs made a lil difference but still was breaking up on full throttle. I pulled the harness and part of the harness going to the coil pack harness was fried up, replaced the section an haven't had any issues yet, gl

 

have you washed your car much?

 

You jokers realize that a $50 fuel pressure gauge would have saved all this trouble, right?

 

^More like 25 bucks. If people would look back a few pages I posted links to a good fuel pressure gauge in mid 2009.. lol

But I definitely agree with you. You guys should just spend 25 bucks on a gauge. It's a good investment.

https://www.tamparacing.com/forums/nissan-infiniti-tech/569557-those-need-fuel-pressure-gauge.html

Can't get the link to work so copy and paste it.. lol

 

word! still havent checked boost leak, but i was told to check base ignition timing. whats that? lol and also when i unplug my fan from my fuel pump fuse location, the motor idles up a bit, and sorta "cleans up".. and this is because im running my fuel pump directly from acc power at ign because it didnt work when i turned the key on originally. so basically here exactly my deal:

it bogs real hard at heavy acceleration, especially after 2500 or always at wot. and when im just cruising at like 2500 or higher, it will randomly bog, like i can watch the vacuum go from 10/11 down to 1, and then it comes back up to 10/11 after a few seconds. the way it breaks up, im thinking its something fuel related.. any suggestions?

and, i put my stock pump in and it made it worse, way worse. but i also pumps VERY softly, is that normal?

 

Sounds like a fuel problem if the stock pump made it worse. Were you driving hard with a stock pump? How was it at idle with stock pump?

Get a fuel pressure gauge. Sure you have the correct firing order and timing?

 

firing order is def right, and i timed it according to the fsm, just havent gottem a light on it yet. and i could hardly even accelerate with the stock pump. im almost thinking im not getting 12v to the pump... because ill say, i had my turbo timer wired into my ignition harness, which is where i ran my fuel pump power, and it was smoking so i unplugged it. im thinking theres to much current pull.. but i dont have a fucken volt meter here, this blows.