ok, a couple of weeks ago i started the car and it sounded like a cylinder wasn't firing, this happened for about 15mins of driving but then it went back to normal running, and now this has been intermitent(every other time, mostly when goin high rpm but it almost happens anytime it wants to) the cylinder would stop firing, now the cylinder am talkin about is #4, the injector is doing the problem as i tested by unpluggin it, it didn't change the idle(while it was misfiring), the other injectors did change the idle when bein unplugged.
what am wondering is....is the injector just plain bad or is there some sort of short-circuit every once in a while causing the misfiring?, am asking because the car runs fine most of the time(even high rpm) but every once in a while the #4 injector would stop firing.
fuel injector or wiring to it?
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rsmithdrift
- Posts: 1984
- Joined: Fri Jan 27, 2006 2:18 pm
- Car: 1993 240sx fastback se.
Congrats, your car has my cars EXACT PROBLEM.......
I have no clue why it's doing it, I can plug and unplug the thing all day and it wont' change a thing, and the injectors good, there's just no power getting to it from the wiring harness for some reason that I'm unaware of.....
Sucks bad......
Also This is the 5th thread I've seen in a month about this EXACT problem from different people. Apparently it's pretty common.
I have no clue why it's doing it, I can plug and unplug the thing all day and it wont' change a thing, and the injectors good, there's just no power getting to it from the wiring harness for some reason that I'm unaware of.....
Sucks bad......
Also This is the 5th thread I've seen in a month about this EXACT problem from different people. Apparently it's pretty common.
ok, i now believe my injector is totally gone as it wont fire anymore(car is currently runnin on 3 cylinders, plug/unplug injector #4, idle doesn't change)
so how do i go about replacing the injector? i've been tryin to take it out of the fuel rail but just can't, it seems stuck in there like there's no tomorrow, there a trick or somefin on how to take'em out and put back in?
so how do i go about replacing the injector? i've been tryin to take it out of the fuel rail but just can't, it seems stuck in there like there's no tomorrow, there a trick or somefin on how to take'em out and put back in?
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DjPantsSpecR
- Posts: 1711
- Joined: Fri Jan 14, 2005 12:49 pm
- Car: 93 Nissan MS13
92 Nissan RMS13
OH GOD, its just a ****ing *****.
and its only slightly easier to pull injectors from a rail off the cart as it is from one on a car.
there are two little slots cut into the red part of the injector on opposite sides of each other. you shoud be able to easily spin the injectors to get these slots into a position where you can get to them.
then you put a screwdriver in each slot and pry it up. its fairly easy to damage these, so make sure to use an appropriate sized screwdriver.
dont be surprised if it takes more than 5 minutes to get it out, but those origns in there better be tight to make a good seal, you know.
and its only slightly easier to pull injectors from a rail off the cart as it is from one on a car.
there are two little slots cut into the red part of the injector on opposite sides of each other. you shoud be able to easily spin the injectors to get these slots into a position where you can get to them.
then you put a screwdriver in each slot and pry it up. its fairly easy to damage these, so make sure to use an appropriate sized screwdriver.
dont be surprised if it takes more than 5 minutes to get it out, but those origns in there better be tight to make a good seal, you know.
thx djpants
and also thx for this write up zerothread?id=179725 found it easier to take out the injectors, and now the car idles fine and has 4 cylinders runnin, not 3!, i even took out the injector with the fuel rail still in.
guess my problem wasn't wiring then.
1 thing though, i have a set of S14 injectors and though they are the same flow and cap, the S14 injectors had this thing @ the tail(where the little holes are), sort of like those bosch platium +4 spark plugs, the S13 injectors didn't have such thing.
and also thx for this write up zerothread?id=179725 found it easier to take out the injectors, and now the car idles fine and has 4 cylinders runnin, not 3!, i even took out the injector with the fuel rail still in.
guess my problem wasn't wiring then.
1 thing though, i have a set of S14 injectors and though they are the same flow and cap, the S14 injectors had this thing @ the tail(where the little holes are), sort of like those bosch platium +4 spark plugs, the S13 injectors didn't have such thing.
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DjPantsSpecR
- Posts: 1711
- Joined: Fri Jan 14, 2005 12:49 pm
- Car: 93 Nissan MS13
92 Nissan RMS13
****. i wrote you a whole little post, but then my computer froze.
so, this was the gist of it:
s13's have a "full faced" cap it is light brown. S14s have the little four triangles. this cap just holds on the lower o-ring, and if they didnt exist the o-ring can potentially pop out, dumping fuel into your engine.
i thoguht my car was going to set its bumper on fire. it happened to me.
so, this was the gist of it:
s13's have a "full faced" cap it is light brown. S14s have the little four triangles. this cap just holds on the lower o-ring, and if they didnt exist the o-ring can potentially pop out, dumping fuel into your engine.
i thoguht my car was going to set its bumper on fire. it happened to me.
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rsmithdrift
- Posts: 1984
- Joined: Fri Jan 27, 2006 2:18 pm
- Car: 1993 240sx fastback se.
Re: (TheOne)
Wow....you do have my cars twin don't you??TheOne wrote:ok, i now believe my injector is totally gone as it wont fire anymore(car is currently runnin on 3 cylinders, plug/unplug injector #4, idle doesn't change)
so how do i go about replacing the injector? i've been tryin to take it out of the fuel rail but just can't, it seems stuck in there like there's no tomorrow, there a trick or somefin on how to take'em out and put back in?
My bad injector is #4 as well, #3 and 4 used to turn on and off as they pleased but I seemed to solve #3's problem by wiggling the wire into the right spot, but #4 is completely gone now.
It's been a week of driving every day and it hasn't fired once......I can plug/unplug it all day long and no result. It's just dead.
Re: (rsmithdrift)
i don't know how bad it is for an engine to run on 3 cylinders(vibration and stuff like that) so i was just lucky i had a spare fuel rail with injectors and i had to replace'em, local o'reilly auto parts store sells'em for $100 each,lol.rsmithdrift wrote:Wow....you do have my cars twin don't you??
My bad injector is #4 as well, #3 and 4 used to turn on and off as they pleased but I seemed to solve #3's problem by wiggling the wire into the right spot, but #4 is completely gone now.
It's been a week of driving every day and it hasn't fired once......I can plug/unplug it all day long and no result. It's just dead.
i like the sound between idle & 3k rpm, it sounded like a WRX:).
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DjPantsSpecR
- Posts: 1711
- Joined: Fri Jan 14, 2005 12:49 pm
- Car: 93 Nissan MS13
92 Nissan RMS13
see, i was worried about the computer freezing so i didnt clear this up enough.
if the triangles are broken, its cool and the gang. the top part of the cap witht he triangles doesnt hold that cap on at all. if you still have two of the triangles intact, the cap is fine. it will still hold the o-ring.
so don't buy anything if this is the case, you'll be alright.
if the triangles are broken, its cool and the gang. the top part of the cap witht he triangles doesnt hold that cap on at all. if you still have two of the triangles intact, the cap is fine. it will still hold the o-ring.
so don't buy anything if this is the case, you'll be alright.
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rsmithdrift
- Posts: 1984
- Joined: Fri Jan 27, 2006 2:18 pm
- Car: 1993 240sx fastback se.
ZOMFG!!!
wow, seriously, I just got my injector in and drove the car around about 30 miles in the country and wow.....I fixed problems I didn't even know I had.
My car has torque now. I always assumed it was the difference between the V6 and the I4 but apparently not, obviously it was the diffence between 4 good injectors and 3 good/ 1 bad. I can take White Oak mtn (more like ridge) all in 5th gear now where as before it was necessary to downshift to 3rd.
It used to bog out when I hit full throttle and get this lean smell, now I know that was symptoms of a bad injector, my miss is obviously gone and so is my rough idle/stalling issue.
The only one of those that used to come and go was the miss. And some days it just plain ran better than others........all gone now, car runs perfect.
That's just nuts.....
wow, seriously, I just got my injector in and drove the car around about 30 miles in the country and wow.....I fixed problems I didn't even know I had.
My car has torque now. I always assumed it was the difference between the V6 and the I4 but apparently not, obviously it was the diffence between 4 good injectors and 3 good/ 1 bad. I can take White Oak mtn (more like ridge) all in 5th gear now where as before it was necessary to downshift to 3rd.
It used to bog out when I hit full throttle and get this lean smell, now I know that was symptoms of a bad injector, my miss is obviously gone and so is my rough idle/stalling issue.
The only one of those that used to come and go was the miss. And some days it just plain ran better than others........all gone now, car runs perfect.
That's just nuts.....
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DjPantsSpecR
- Posts: 1711
- Joined: Fri Jan 14, 2005 12:49 pm
- Car: 93 Nissan MS13
92 Nissan RMS13
thats good to hear my friend. its a more common problem then people think.
but i dont know why injectors spontaneously die. i mean when they are out of the car, they can just become non-operable. TheOne just proved this, and i have a few times. i think its just nuts.
and i ran my auto 240 like that for around 30 miles. i just swapped a 95 motor in and i couldnt figure out why it was such a piece of ****.
Now i hope you dont still have that bad CTS, because you losing a proven 30WHP in the low end.... and 8 peak. its the biggest power adder that YOU can add for 56 bucks.
but i dont know why injectors spontaneously die. i mean when they are out of the car, they can just become non-operable. TheOne just proved this, and i have a few times. i think its just nuts.
and i ran my auto 240 like that for around 30 miles. i just swapped a 95 motor in and i couldnt figure out why it was such a piece of ****.
Now i hope you dont still have that bad CTS, because you losing a proven 30WHP in the low end.... and 8 peak. its the biggest power adder that YOU can add for 56 bucks.
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rsmithdrift
- Posts: 1984
- Joined: Fri Jan 27, 2006 2:18 pm
- Car: 1993 240sx fastback se.
Re: (DjPantsSpecR)
I replaced that long ago. I knew that and the O2 were bad when i got the car and if your refering to that Mustang race I posted in mmm240's thread that was literally 2 weeks after I got the car and it was in exactly the condition I bought it in, and come to think, it didn't have the intake then either.DjPantsSpecR wrote:thats good to hear my friend. its a more common problem then people think.
but i dont know why injectors spontaneously die. i mean when they are out of the car, they can just become non-operable. TheOne just proved this, and i have a few times. i think its just nuts.
and i ran my auto 240 like that for around 30 miles. i just swapped a 95 motor in and i couldnt figure out why it was such a piece of ****.
Now i hope you dont still have that bad CTS, because you losing a proven 30WHP in the low end.... and 8 peak. its the biggest power adder that YOU can add for 56 bucks.
And yeah, it sickens me how common of a problem that CTS is as well as the O2 sensor and nobody ever replaces them or thinks that they are the problem, especially with gas the way it is, there's no reason to leave a 150k mile o2 or CTS in your car, especially when they only cost like $15 - $30 a peice....I mean, common, is getting 15mpg and no power worth saving $50???
Oh, well, but yeah, I took my ohm meter to everything and this car is perfect now. Runs awesome. I'm pumped, even my friends noticed it running better w/o me even saying anything about it.