not getting fuel to my sr swap, please help

[stevejames3]

Hey, im at the end of my sr swap. and i went to do a quick start-up, check stuff out and its not fireing up. it cranks good, its getting spark and the fuel system has fuel, just wont start. fuel pump is working but the cylinders arent getting any fuel....it seems to not be getting any injector pulse. am i maybe missing a ground or a plug somewhere? yuri(does all heavythrottle stuff) did my harness. i have a s13 with redtop. would the cas have anything to do with this. just trying to get this running so i can start putting it all back together and tune it. thanks for any help. Steve

[mRclARK1]

Check your timing and your CAS (could be misaligned). Also pull out your spark plugs and check for raw fuel; the engine may be flooded.

[NemeGuero]

Check all the wiring to the ignition system.

I know it's an SR but having something unplugged on my distributor kept my KA from starting.

Did you mess with anything that would offset the timing at all?

[kouki_s14]

mix up fuel feed and return lines?

[g2ic02]

check all that is stated above. Is your wiring all good. do you have fuel pressure at the rail?? Fuel lines should go as follows from tank to bottom of filter...top of filter to end of rail....line from fuel pressure regulator should be your return line. When you turn the car over does it fire at all or does it just crank?? The motor could be flooded. Try putting the pedal to the floor and crank, this will put the ecu into clear flood mode. Check and recheck all wiring and connections. When i did the swap i missed the ground at the back of the valve cover for the coil packs. Then check the crank angle sensor timing. There are plenty of articles on here describing how to set it. Good luck.

[go240]

yea, double check the lines - i crossed mine initially. my fuelpump fuse also popped - so check that as well

[stevejames3]

i adjusted the cas a bit to see if it would do anything, trying to get it to turn over. i have two grounds that i completly replaced on the back of the head/valve cover area. im getting spark. and last but not least i have two plugs that go to nothing, i have a pic but photobucket is down. they come from around the harness side of the ignitor chip. ill get pics up asap,

[ISTOTOSAO]

mix up fuel feed and return lines?
Here is where my money is.

[quad_ova]

if the fuel lines are not crossed then check all your grounds. I read somewhere on zilvia that the sr20 is very sensitive to grounds, so if your missing one the car won't fire up. This statement was tried and true when I did a swap for someone took me 2 frikkin hours to realize I left a ground disconnected. stupid me

[stevejames3]

took off the fuel rail. only pulse in the first injector (close to bumper) so i replaced them with a set of 480 s15 blacktop inj (was gonna get it running on the stockers) and they all pulse. must have been some bad/clogged inj. so im getting fuel. getting spark, compression is low in the back 2 cyl. 105 and 130 if im not mistaken. still not turning over. hhmmm. this is my 3rd motor, ive waited for 5 months(getting hard to find parts so on and so forth) to get this running and now this. im so pissed......blah

[stevejames3]

Here is where my money is.

clogged injectors.....pay up

[ISTOTOSAO]

clogged injectors.....pay up


That is genuinely really funny.:bigok:

[stevejames3]

Ok, heres where i am with this. im getting fuel (spark plug smells like it should be getting more). getting really weak spark. did some starting fluid, backfired. cranks and backfired a few times like it wants to start. i put on 2 more grounds. one going from the fuel injector grounds(on the intake manifold) to the strut area. and the valve cover to strut area(oposite side). maf is hooked up but intercooler piping isnt solid, had it off for starting fluid and shit. does this sound like a timing problem? cas problem? ground problem oh also i got ecu code 55. if i get this to turn over, its put back together, give it a rough tune with the greddy, break it in. and tune it again. PLEASE help. im running out of ideas and getting kinda pissed.

[stevejames3]

ttt any ideas at all! please

[runyun]

any update on this?

I'm having the same/similar problem.

S13 sr into an S14 chassis.
Doesn't look like I'm getting injector pulse -

when we spray brake cleaner into the intake, it fires up w/no problems.
We have fuel pressure
We have spark

?

[the head]

runyun: try another ECU could be bad injector drivers

Stevejames: weak spark could root in ignitor chip test and replace if necessary...testing procedure is in the FSM

[runyun]

runyun: try another ECU could be bad injector drivers

Stevejames: weak spark could root in ignitor chip test and replace if necessary...testing procedure is in the FSM


We tried a total of 3 different ECU's.
We got a code of 11 - (CAS circuit)
Funny thing - another friend of mine has the exact same problem, we're both stumped.

We're going to have a friend w/a running SR come by and swap out CAS's - hope that resolves the issue. I'll post up results

[Markovich]

hey, im a newbie to this forum. the funny thing is i did the sr20det redtop in my 90 240 coupe and mine is having the same problem!!! i dont have the hot pipe hooked up but it shoulod still start, right? need help its pissng me off thnx

peace

[Ghase]

OMFG I also have the same problem with my 240sx. This crap sounds all to familiar, even down to two plugs that go to nothing over by the ignitor chip. I really need to get this up and running. Guys your help is needed…..:cry: :cry: :cry:

BTW I have the Mines ECU ROM-tuned for sr maf and "480" injectors, that wouldn't make a difference right?????

[Ghase]

SteveJames3, any updates?????:goyou:

[Markovich]

which two plugs are we speaking off? i have a couple of plugs not going any where either and i dont think those matter. dont quote me though... if anyone here has any suggestions how to getting the sr to run because i miss driven my 240 :(

[mRclARK1]

stevejames3: ECU code 55 is "other malfunction" in the FSM, I believe.

Markovich: Post some pics of the plugs, if you can.

[Markovich]

i will when i get back to my house i took the picture ummm... does any one have any other suggestion into starting my sr20 not to sound so blunt but its been almost 4 months since i drove my 240 and people are starting to make fun of me but i have no clue what it could be i checked all the grounds i think are there and i also have fuel going to each cyclinder and i have spark but no maf hot pipe hooked up... thnx for any good suggestion


peace

[mRclARK1]

Is your MAFS hooked up at all? If not, do that first.

Check your CAS; it might not be aligned properly. Try checking your timing to. Pull your spark plugs out...if there is raw fuel on them, your engine may be flooded.

All the suggestions I can think of right now...actually...just read my first post in the thread...same suggestions.

And if it makes you feel better...it's been almost a year since I drove my 240. Good luck.

[Markovich]

http://J:\DCIM\100MSDCF

edit: idk why it isnt showing sorry
i dont have the hot pipe yet it is in the procces of being made... im not going to start it until i get all of the pieces but i just want to know thta that is the only problem with the car and be able to sleep. i cant sleep noing my car isnt going to start - -

[bongnak]

yeahh the charge pipes;hot pipe, cold pipe, warm pipe...all of them.they have to be connected no leaks watso ever. the intake pipe too(before turbo and after maf),put a filter on it too. Nissan maf are picky ive noticed that if you dont put a filter of some sort on the maf it will die. fuel lines- the line comming off the fuel filter needs to go thru the injectors then thru the pressure regulator. also with grounds...get the fsm from zeroyon and check the wiring diagram, make sure body grounds are grounded to body and engine grounds are to engine. take your time and get everything hooked up, i keep reading that you dont have hot pipes hooked up 'yet' and stuff, so take your time.good luck keep us posted

[Markovich]

thnx for that imput "bongnak".
yesterday(sunday) i was working on aligning everybody panel.(90 240 coupe with a 91 front bumper with boomex lip.) and i smelled like this burnt smell and i looked up at my spark plug cover and sure enough there was shit load of smoke coming out so i ripped the neg. battery cable off and pulled the coil out.(this is the second one.) can anyone explain why a coil would melt down? c.o.p are expensivre and thats the second one the car has blown and the car hasnt even started. so i need HELP!!!

thnx in advanced


peace

[Markovich]

updates? did anyone firure this out?

[Ghase]

Well guys today I checked the spark plugs and the coils to see if I the car was indeed flooded, and to my surprise the plugs was Brand new, with no fuel on them. Next I check the fuel line going to the pressure regulator to see if any fuel was getting there, none was seen, even when I tried to start the car.

Thursday I’am going to have my mechanic come by and take a look at it…. At this point and time I hope it's the fuel pump????

Also note I bought the S13 like this for $1800 with missing harness, ecu, fmic, and exhaust piping. Learned my lesson...LOL

[runyun]

UPDATE:

figured out the problem last night. I had a wire crossed by the ecu.

There are a lot of things that cause your injector pulse to not work
(your positive side is always "on" to the injectors - the injector open/close with "ground" pulses supplied by the ecu)

Make sure that your ECCS relay clicks on. Since that supplies power to your CAS and MAF. If its buzzing, then you obviously have a short somewhre - so start tearing apart your wiring to double check all your connections

[Markovich]

what if you hear them working and have fuel in the lines? if coilover plugs are getting old would they be able to produce the 100,000 vlots to start an engine? and what would cause a coilto melt down?

thnx

peace

[Chite]

when i did my sr swap i had the same problem in a way but i just had to switch the fuel lines and if your coil pack is melting you might have a bad ground or not enough. but thats my guess

[Markovich]

if i had a bigger/more ground they would stop melting. srry im in the dark still about coils thnx. another question i have 225/45r17 motegi mr7 and the driverside coilover is like a 1/4" from the tire so if i put any weight on the car it would hit the tire. on the passengerside it is 1" away from the tire and wouldnt hit unless a lot of weight was introduced.. what would causes this and these are brand new tires so i dont want them ruined. thnx

peace

[Markovich]

? anything new?

[smithers584]

i bet if you checked you would probably find that you have power constantly to that coilpack, meaning that there is a short to ground somewhere in the wiring to that specific one that is completing the circuit. a bigger ground may or may not fix the problem because current will follow the path of least resistance. if you say you have fuel in the lines and you can hear you injectors working then you have to have fuel in the cylinders as long as the lines are hooked up correctly. i would start double checking everything, make sure they are hooked up correctly, double check your pressure, and make sure they are operating. if you have all three then fuel has to be in the cylinder, theres nothing mystical about it. if you come to find your injectors arent pulsing, then you need to looking into wiring, ecu, or cas.

[Markovich]

i do have power to the coil constenly that is how they work and the ground pulseates to create the spark but im confused by what you said when you wrote "meaning that there is a short to ground somewhere in the wiring to that specific one that is completing the circuit." and yes i do have fuel to each cyclinder i pulled the fuel rail off and i started the car and each injector worked fine(pulsating)thnx

peace

[smithers584]

ok well im confused now on who has a fuel problem? did fuel spit out all over the place when you pulled the rail? haha anyways yes you will have power there but only when supplied a ground, just a wire from a 12v source does not mean you are constintly running 12v through it, only when supplied a ground to complete the circuit. so what i am saying is that you may have a wire that is shorted to ground and is allowing current and voltage to be drawn through your coil constantly. not just 12v volts sitting there waiting to be used. you get it? i am talking about with the key out and no acc power supplied.

[Ghase]

Update:

Well today my mechanic came by and worked on the car. He ran some test with the ground wires and sourced the problem right out. The car has a weak spark in ignitor chip, so took it out and then tested the coil, CAS and injectors to see if there operating correctly. Tests reveals the car has one bad coil and a really BAD ignitor chip, other then that my mechanic say it should start once that’s fixed. And the fuel problem was never a real issue.:doh:

[Markovich]

im getting a new coil pack harness but jw how do you test an ignitor chip?
thnx

peace

[DriftPunk]

updates? did anyone firure this out?
it sound like a groud problem id check it again

[Markovich]

i will try that then thnx


peace

[Ghase]

[QUOTE=Markovich]im getting a new coil pack harness but jw how do you test an ignitor chip?
thnx

To check the ignitor, my mechanic stuck a needle type voltage checker behind the plugs where the wire goes. My car gave us a very dim light, meaning that the ignitor chip was in fact was no good. Same for 1 the coil……

[Markovich]

Like A Test Light? And That Would Still Be The Prmary Section On The Ignition Right So It Would Be 12volts Still Right.....thnx


Peace

[Ghase]

Yes it's a light tester, and only the primary section on the plugs. Not sure about the voltage.... Good luck

[Markovich]

um.. i got my new harness and coil packs today i hooked everything up and checked everything like 4 times and it didnt start and i got pissed and walked in side. i then decide to try to ram a pipe to make a hot pipe and i know that wasnt smart but what could it hurt if im not really boosting it at idle so i tryed it and it didnt start it then started to sputter and then it caught and i was so exceided i jumped out and i heard this :now very depressed: um it was making a fan grinding a shroud kinda sound but it was coming from the turbo and it started to smoke a little bit. so i quickly turned it off and tryed figureing it out..... i want to drive it so bad... ryan told me to check all of the oil lines oil pan oil return everything so im going to do that tommerow after school if anyone wants to help that are greatly appreciated... and i noticed my cluster doesnt work either and when i take the key out the car still thinks the key is in the ON postion :but stalled out: until i pulled the battery bulb in the back of the cluster... any suggestions i will greatly appreciate also... thnk you on everyones help and F___HACKERS.......

[Ghase]

Well at least you heard it start. Me, I'll not worried about that because I'am supercharging my 2000 maxima with 9psi this week!!!!!!!! But at the same time, the 240sx is going in the shop to get everything done.

[Markovich]

just a dent in the oil pan the smoke was oled oil that sat there when shippen