Has this ever happened to anyone before?????

[spank044]

Maybe you should have a real mechanic look at it for the amount of money you have thrown at it with no repair. What is your fuel pressure at? You have all the symptons of high fuel pressure.

[ShouldaHadaV8]

I agree. But I cant exactly DRIVE it to the nissan dealership. I should go ahead and buy the fuel psi gauge, I'm thinking about buying new injectors, but I know mine are not leaking or stuck open. What would cause high fuel pressure? I've searched the fsm and I know its supposed to be 43 when the car primes the fuel pump, and 34 at idle, but not what would cause high fuel pressure.

[ShouldaHadaV8]

And I have already tried 2 fuel pressure regulators

[ShouldaHadaV8]

If I only knew what it was that was wrong I could fix it

[compactfean]

You can get a cheap fuel gauge at harbor freight. Fuel pressure is very important to know when doing diagnosis work. You could have a slightly pinched fuel line and idle fine and when throttled starve for fuel and lose fuel pressure. Also the mafs you are using is it a dohc mafs? Also also what injectors are you using? Someone correct me if I'm wrong but aren't two injectors different? It sounds like something is not OEM... chipped ecu? Wrong inj? Wrong maf? Just some ideas.

[ShouldaHadaV8]

Im using the right parts, 270cc red inj's, stock #29 ecu from an auto, the same MAF that worked on my last motor. Im not swapping injectors from other rails or anything wierd I looked for vacuum leaks, and I've replaced all the sensors and wiring, I tested spark and its related parts,fuel parts have been replaced, blah blah blah.
Im going to buy the psi gauge and ECU talk and work from there. I need to see what my fuel pressure is, but I tried two FPR's and my injectors aren't leaking so I dont know how high fuel pressure could be the problem. The knock sensor code could be coming up from the way the motor is running , not running bad because of the code being there.
ONE DAY

[compactfean]

I think its low fuel pressure. Spank044 got bets on it?!

[compactfean]

Oh which reminds me. Can you rev it normal with extra alternate fuel? Ie start fluid? Fuel lines are not backwards?

[ShouldaHadaV8]

I've never used starting fluid on a fuel injection system. I always sprayed ether into carburators but that's it. The hoses aren't backwards either, Hell I wish it was something that simple

[ShouldaHadaV8]

AHHH I put down a deposit on a 03 WRX, until the banks open again for the new year.
No more worries about getting to work, damn nissan.
anyways pretty soon im going to buy the ECU talk and nissan tech software, But the KA-T money is deffinitely going to a down payment on the subby, it kind of made me sad, but who knows I may not even get it.
AWD FTW

[ShouldaHadaV8]

So besides buying a fuel psi gauge, and the consult program I cant think of anything else I could replace or test, except I guess the dash and body wiring harnesses.
and even once I know the fuel pressure if it was high or low I wouldn't know what else I could replace to fix it, I've already replaced my old walbro for a new one, bought a fuel filter, new hoses from the injectors to the filter and the return line to the regulator.
and even the consult is only really going to tell me voltage readings easier, and show my timing, of course a few other usefull things but not anything I probably haven't already thought about.

[compactfean]

You check your fuel pressure yet?

[NewKleer]

how did you do the earlier ecutalk checks without a consult cable? its hard to say categorically it wont help to log a run where its bogging and upload the log files somewhere so others can take a look - and other people might notice things to take a look at that you havent thought about

as for the fuel pressure, did you change the fuel regulator? (didnt sound like it from above post)

[ShouldaHadaV8]

Nismo24096 ran a consult on my car, he tried swapping his MAF sensor, and he was nice enough to let me use his #29 ecu because mine quit working and I didn't even know it untill he swapped them ( my relays weren't working ). He is the only one I know in person who knows more about these cars than I do but he didn't have the time on his hands to really look at everything he was just trying to help.

On another note I dont think im getting the wrx, I couldn't find anyone to approve the loan because it was a 2003. so if I can get the 240sx going I still have the money for the KA-T set up. So please NICOmmuntiy help me figure this out.

[compactfean]

Bro you keep asking for help but haven't checked the basics in the first step in diagnostics. First its fuel then spark then air ( usually is mechanical if you have airflow issues). Lets think about it, fuel, if you didn't run out of gas fuel pressure will tell you everything. To high blocked line or reg. To low again pinched line, bad pump, bad wiring to pump. Spark, coil or coil wiring( weak spark could be bad power wire) trigger signal which includes ignitor chip and ecu. And then air. If timing chain, valve seats piston issues occur a simple compression test will tell you if there are issues. Last is tuning. Check maf. Voltage Tps voltage knock detect. Adjust idle and timingi would suggest starting over and post every spec and test what we ask you to test. Process of elimination and you rather tested/checked something incorrectly or failed to test something.

[ShouldaHadaV8]

Compactfean I have tested EVERYTHING you just said probably more than 20 times, except the fuel pressure because I have already replaced and retested every single fuel part , no pinched lines , I replaced my old walbro with a new one, new filter, new hoses, injectors are good.
I have all new spark related parts, I've done the compression test, I've checked voltage readings

I believe This to be a wiring issue, Im glad you posted your last post, because something you said actually is relevant. the wiring to my fuel pump does act weird from time to time but I could never find anything about its electrical values to test. I noticed that sometimes the fuel pump wouldn't get power unless you twisted the cannon plug which connects the body harness to the fuel pump. BUT I tested to see if it was loose wires or a bad connection but that wasn't the case, I checked it with a voltmeter and only got something like 0.01 volts but I could be wrong that was a long time ago. the fuel pump has power and primes , and it deffinetely has more than enough flow.
And of course im asking for help WTF else should I do, IDK how to fix it. Im not lazy and im not stupid, but I can only do what I know how.
If you have any experience with bad wiring to the fuel pump please enlighten me it could be the problem, but please dont think I would ask for help if I knew how to fix it without you.

[NewKleer]

you haven't replaced the fuel regulator, so fuel pressure could still be it. and just cause your replaced everything doesnt mean all the new parts are working well.

so get something to test the fuel pressure (or get someone to), and get the consult cable and post the consult logs (ecutalk best for logs) and go from there.

[ShouldaHadaV8]

And I have already tried 2 fuel pressure regulators

im buying ECU talk tonight

[ShouldaHadaV8]

It was timing after all, it runs great now. Needed a timing light to see it.
Thanks for the help you guys, I dont know how I couldn't get it right I set timing at least 100 times.

[NewKleer]

good stuff! goes to show doing something 100 times doesnt mean you did it right (although you'd hope so). setting it via consult with a timing light (after locking it with consult) is usually easiest. i assume u did the manual timing lock method? (disconnect tps and rev a few times?). if u just did it without locking it, might explain why it was never done right.

[compactfean]

Congrats bro! Sorry if I came across as a d!ck...only here to help! Now you need to make that Turbo punish that motor..lol. fyi I'd look into the fuel pump wiring mod if your going ka-t. The stock wiring. Doesn't let the fuel pump run at full potential. Not to mention give you piece of mind of whatever weird is going on back there.

[ShouldaHadaV8]

Its cool compactfean, I know you were just being to the point. I never heard that about the fuel pump wiring, so im gonna look into that asap. im going to try and stay one step ahead of the problems from now on.

[NISMO24096]

Holy Hell, you mean to tell me it was your timing all this time!!!!!!lol damn bro thats crazy...Glad to here you got her running...I might try to make it out to my parents late on saturday to drop my son off for a long weekend with his grandparents so I might stop in to say hi....

[ShouldaHadaV8]

yeah I know I was pretty mad at myslef over it, we went over it 1,000,000 times even me and you had ecu talk telling us the timing was 20 btdc, idle was 750. but we used a timing light and got it, it sounds like a whole new car instead of like the video

[NewKleer]

this is probably one of the only times when ive seen someone talk about checking the timing value in consult, that i forgot to mention that consult timing is an 'output' value and it assumes static timing set correctly with a light

it sounds logical once your told, that the reason you have to manually check timing is because if the ECU could read it, it would adjust its timing automatically to compensate for any incorrectly set base timing, i.e. you would not be able to adjust/advance timing yourself.

[NISMO24096]

Sad part is I know that the ecu talk only assums the timing is right to start with,but like you said you had set the timing a million times before and was sure it was right so why look at it again..lol dude call me sometime 904-534-3845 odds are I will be at my parents saturday nite...

[s14280zx]

Did you replace your fuel filter lately, and have you tested the o2 sensors? I have two s14's, and those are two problems I've had with similar symptoms. Also, on my '98, the crankshaft position sensor went bad(located at the top of transmission straight down from firewall on drivers side, a b**** to get at). When the 02 sensor goes bad, the ecu gives it more fuel. My s14 has two 02 sensors, one at header, and one before cat, not sure about s13's. Hope this helps.