fuel injection questions.

[uptownsamcv]

im new ot the hinda scene and i have a 89 crx si. the fuel injection system that it came with is a resisterless PR4 A02 its a chipped 90 integra LS ECU. The intake manifold apears to be off a 92 - 95 civic. what im wondering is how high should the fuel pressure be? rigth now its at 45 when idling and jumps to about 60 under throttle. the car came with a adjustable fuel pressure regulator and pressure gauge hooked up. The car idles real low and tends to sputter when i give it a certain throttle amount also spits out lots of black water. and for some reason it seems to pull hardest around 4,800 rpm. im thinkgn of just going with a stock fuel pressure regulator cause i dont see why i realy need the adjustable one. im thinkign its making the car run rich.

sorry for the long post.

 

[INJEN78]

umm what motor is in the car???
the pressures sound around right,,,but those adjustable FPR gauges are garbage
and black water?!?!?thats not good..black is rich,but there shouldnt be water

 

[uptownsamcv]

its a D16a6 with high comp pistons and i think he said the head was had a 3 or 5 angle valve job.

 

[t3t4delsol]

yeah waters not a good sign, has the car been sitting for a while? Cold air intake? if so someone could have hydrolocked the motor and there could be water sitting in the header and exhaust. Is it smoking at all?

 

[uptownsamcv]

it is definately something with the fuel system. i lowered the fuel preasure to 40 with the vacum line reoved from the AFPR and set it to 40PSI and 30PSI at idle and it runs practlicly flawless. i think i might bump the pressure up to 45 cause thats whats the recomended pressure for the newer resisterless injectors. plus i think it migth be runnin a bit lean cause the engine light came on and it never use to. the car does seem easier to drive now and i dotn have to give it as much throttle as before. only time i realy notice the sputter and its barely noticeable is when im doing around 60 and i hit the gas a certain amount. im thinkign maybe i should change the MAP or TPS sensor.