ka24de PROBLEM

[osal]

anybody has some ideas about the fuel pressure regulator??

[bo2o]

advance your timing to 15 btdc try that out. close gaps a lil on spart plugs

they say run .o44 run .o35

add more grounds. check fuel pressure. change fuel filter, fuel pump.
300zx fuel filter.

[xsparc]

.35 should help out, it did for me

[osal]

well i already added grounds, changed fuel pump and put a new z32 filter...i m goin to try changing the gap of the plugs....

but wat about the regulator...how should a car run with the vaccum line disconnected...obviously the idle is going to be a tad high cuz of the vaccum leak...but when it comes to performance, my car still runs like shit which make me believe a have a faulty regulator.. a fuel pressure check would determine that but i dont have a vaccum pump in hand to test the regulator...However, in theory dont u think the regulator is bad ?since all other components chek out such as fuel pump, filter, injectors.
let me kno wat u think..thanks

[orion::S14]

EGR might be failing, allowing exhaust into the intake manifold all the time (except idle)...block the port in the exhaust manifold with a nickel...to stop flow through it.

Just unscrew the pipe, flex it out of the way. Pop a nickel into the hole. Reinstall pipe.

See if that heps.

- Brian

[orion::S14]

...and/or check the fuel pressure, -OR- try a known-good FP regulator.

???

[darkslide]

Originally Posted by osal

no, after 3k rpms acceleration is really sluggish..thats in every gear.

anyways i was looking at the fuel pressure regulator...i unplugged the vaccum goin to it and run with it disconnected...no change at all ,the car still runs like shit...does this mean my fuel regulator is shot???...i mean i already changed my pump to a walbro and also the fuel filter. Let me know wat u guys think
thanks

how is your car under wide open throttle? because if ur fuel pressure regulator is bad, it shouldn't make a difference under WOT. im sure it would cause some issues starting maybe and at idle but if you cant get the car up quick i dont think its your FPR ( dont think i am but if im wrong someone lmk).
have you got your conzult to work on your laptop yet? that would help u out. also have you checked signal voltage and grounds going to your tps and maf? and hows your egr? while the car is running lift the bottom of the diaphragm up to see if ur car boggs out

[osal]

wen i took the intake mani out,i cleaned the egr and changed all lil vaccum lines around it...yes the egr cheks out since the car does want to die wen i push on the diaphram. i already replaced the tps and set to the correct voltage.

[osal]

well i checked my injectors ohms and o-rings...all check out..however 2 of my injector have the lil teeth at the bottom broken off...will that make me run rich?