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[nissans13240sx]

alright, finally got the SR started. but it runs for about 30 seconds on starting fluid. i have fuel pressure at the line going into the regulator but none or barely any at the injectors. if i crank for a while and then pull the plugs out they will be dry. anyone have this problem? what was the fix? im also pretty sure the injectors are working.
Modified by nissans13240sx at 9:29 PM 7/14/2006

[Blown240sx]

Clogged? Tried replacing the FPR?

[Hijacker]

test the signal going to your injectors. If you have a node (small device that you can plug into the injector plug) it should be pulsing with a strong light.

I'm thinking either you have some wiring issues with your injectors, or they may be clogged. Since you have pressure in the line (albeit I don't know how much), the FPR doesn't sound like the culprit.

One little thing you can try is to pull the fuel rail with the injectors still in it and crank the car and see the amount of fuel the rail is spitting out (all 4 injectors should be spraying simultaneously during cranking). Word of experience. Disconnect the coil packs before doing that. I had a hairless arm for a week from forgetting to do that one time.

[nissans13240sx]

test the signal going to your injectors. If you have a node (small device that you can plug into the injector plug) it should be pulsing with a strong light.

I'm thinking either you have some wiring issues with your injectors, or they may be clogged. Since you have pressure in the line (albeit I don't know how much), the FPR doesn't sound like the culprit.

One little thing you can try is to pull the fuel rail with the injectors still in it and crank the car and see the amount of fuel the rail is spitting out (all 4 injectors should be spraying simultaneously during cranking). Word of experience. Disconnect the coil packs before doing that. I had a hairless arm for a week from forgetting to do that one time.

haha thansk for the help i am going to try this and let you know

[S14-NEO]

and if that doesnt work try checking your start signal fuse in your fuse box. that fuse if blown can stop injector pulse.

[S13FASTBACKSR]

Did you just modify anything or did your car just start acting like this? did you pull your injectors out of the fuel rail for any reason before this started happening? if you did make sure you have the right color wire for the injector clips going to its right spot. It should be a blue wire and a red wire at the 4th cylinder then green wire and red wire at the 3rd yellow/red 2nd white/red at first.

[nzmoman]

test the signal going to your injectors. If you have a node (small device that you can plug into the injector plug) it should be pulsing with a strong light.

if your car runs for 30 seconds you should hear the injectors firing. it is a clicking/ticking sound. if you dont hear this they are not going. If you do hear it then you should research the clogged system scenario. Either way you should replace your fuel filter when you do a swap, it is so cheap and easy.

[nissans13240sx]

and if that doesnt work try checking your start signal fuse in your fuse box. that fuse if blown can stop injector pulse.

ok i figured out that i have fuel pressure. fuel injectors are not ticking. would this fuse that your talking about stop injector pulse.(edit: duh you said that, where is this fuse?) i was thinking maybe it is ecu cause i believe the ecu grounds injectors(correct me if im wrong) i put a test light on the injector wire it just stays lit no pulsing. i havent done anything with the car. I am just finishing my swap up now. thanks for all the help so far. another edit: i did change my fuel filter i have a brand new z32 filter on it. fuel pump is new as well

[nzmoman]

not sure if the ECU grounds injectors or not, but I do know there are ground wires that come right before the injectors on the harness. the lie on the harness after the last injector. there are two screws that lie on the stock manifold just above the air control plugs near the firewall, but still on the intake manifold. i dont really have picture but you should have two grounds posted on the fourth intake runner (the big pipes that round upward on the intake side of your motor). if you dont see two grounds there that may be your problem. their posts are actually a part of that runner near the firewall. Good luck.

[nissans13240sx]

yeah i know what grounds your talkin about but i have those grounded. im thinking it is the ecu. cause its electronically fuel injected which means the computer is controling the injectors. the only thing is that its not a pull out and plug another ecu in for cheap. its pull out the old ecu shell out 250 or more and see if thats the problem. ANYONE IN PA WANT TO COME AND LET ME BORROW YOUR ECU FOR 10 MIN PLEASE CALL ME AT 484-554-0934. ill give you some money to

[S13FASTBACKSR]

before you use someone elses ecu which will take time to get one and maybe money, take off the cover to your ecu and put a mirror behind the computer. then turn the key on and you will see a red led come on. now start the engine and see if the led goes off (which it should) . if it does not go off then this means your ecu is probably the culprit. If the led does go off then first check that fuse that s14marksr told you about to see if thats the problem. I know this guy personally and he knows his stuff. so check those to things and let us know

[nissans13240sx]

alright problem fixed got the car runnin. heres what happened i checked fuses, the one 10 amp fuse marked as engine cont.(dont no what cont. stands for...kinda wondering) well it was bad. car still didnt run right after that. so then i relize my buddy who put the fuel lines put them on backwards. he said that it comes up through the reugulator and out the other one, we switched them and it started right up. thanks for all the help everyone, it still idles alittle rough tried adjusting timing alittle but nothin so if anyone has an idea there im all ears

[S13FASTBACKSR]

the cont. part in engine cont. means continuity. actually i dont know for sure im just throwing out random guesses maybe someone else who knows for sure can tell us. As far as the idle try adjusting the screw on your IACV. its a small phillips head screw near the bottom of the intake manifold that will adjust your idle. its right behind the 4th intake runner(part that connect to the head)