FML.. help??

[nick1809]

just replaced my inectors because they were bad. now it runs even worse. i think one of my coil packs is bad because its a huge misfire fest and doesnt stay on. turns over and immediately chokes itself out. any other possible diagnoses from you guys? i did search but, enlighten me should i have missed something.

[nick1809]

also, i was told by my friend that it blew BLUE smoke when it finally started because it didnt wanna start for a litle while. it would crank and just not turn over.. (did the same thing last night when the injectors finally pooped out on me.) but it did finally start and then proceeded to do the described action in above post. im assuming multiple things wrong here. any help is well appreciated.

[McShanks]

Wow, it could be a lot of things. Have you done the ECU diagnostic yet? See if you have any codes. Blue smoke... Sounds like you have oil in your cylinders, which is very bad. Could be a blown/leaking head gasket, or any number of issues. Cheapest thing to start with is PCV valve. Is the blue smoke only coming out one of the exhaust pipes or both? If both, then likely the pcv valve. If one or the other, fluted valve, bad valve seal, head gasket, etc. If you have turbos, it could be a blown turbo. This could cause oil in your exhaust and your car to not breathe properly, making it die.

A bad coil pack will not cause blue smoke, nor will it prevent the engine from running. I had 2 dead cylinders, and my engine started and ran easily, just roughly and with much less power. If the engine will not run at all, but sort of start, then you most likely have one of the issues listed above, but all in all, it could be a serious problem.

If you can afford the time/money, you may want to have it looked at by a pro. It may also be in your best interest, depending on what the cause(s) is/are determined to be, to have the engine rebuilt if any of the things I mentioned is the cause (with the exception of the PCV valve). It could be other things as well, don't just take my advice/opinion here.

[nick1809]

it was only a puff of blue smoke i guess. im replacing the coil pack. and then, i think im gonna save some cash and go through the motor this winter and replace ALL the gaskets and seals and do some other stuff. maybe build it internally a little bit. hopefully the problem is just the coil pack. but im gonna go over it this winter anyway.

[PAintballa45]

it wouldnt be the coil pack, those are very rare to fail and one of the last things I would look at. make sure your maf is clean and working along with your iac. tps should be calibrated at .44 volts. Also check for any vaccum leaks, those old black hoses crack over time and air entering the intake that is unregistered by the maf can cause idle issues /stalling / wont start etc (z1 has great silicone hoses). If it was just a little blue smoke after cranking the engine over and over you probably flooded the engine and thats the excess gas burning off. +1 on the pcv valves, clean out your throttle bodies and take a look inside the intake to see if there is any visible residue and check your timing

[nick1809]

it wouldnt be the coil pack, those are very rare to fail and one of the last things I would look at. make sure your maf is clean and working along with your iac. tps should be calibrated at .44 volts. Also check for any vaccum leaks, those old black hoses crack over time and air entering the intake that is unregistered by the maf can cause idle issues /stalling / wont start etc (z1 has great silicone hoses). If it was just a little blue smoke after cranking the engine over and over you probably flooded the engine and thats the excess gas burning off. +1 on the pcv valves, clean out your throttle bodies and take a look inside the intake to see if there is any visible residue and check your timing

alright. that sounds good. i wont be able to look at it for a little while but when i do, ill go through all of that. and hope thats it.

[nick1809]

i had one of my friends go over today and replace the ripped coil pack and see if anything happened. it started and did the same thing as last time. all he could smell was fuel and it died. i havent been home so im just going on what he said, im going back this coming weekend and im going to do all of that, ill let you guys know from there.

[GerryO]

just replaced my inectors because they were bad. now it runs even worse. i think one of my coil packs is bad because its a huge misfire fest and doesnt stay on. turns over and immediately chokes itself out. any other possible diagnoses from you guys? i did search but, enlighten me should i have missed something.

Did you replace all six, using new injectors (not rebuilt) and all new o-rings (upper and lower), and was the plenum pulled to do the job? How about ohm-checking the new injectors, before installing them and using a Noid lamp to test the injector harness?

Sounds like you may have a leaking injector o-ring.

[nick1809]

Did you replace all six, using new injectors (not rebuilt) and all new o-rings (upper and lower), and was the plenum pulled to do the job? How about ohm-checking the new injectors, before installing them and using a Noid lamp to test the injector harness?

Sounds like you may have a leaking injector o-ring.

i replaced all the injectors and they were tested from the distributor. i have the test sheet. pulled the plenum like half way and just picked it up to get them on. brands new upper and lower o rings, pressed the injectors into place no problems there, im assuming its not my injectors since they are new but i may need a new fuel filter i think. bc it kinda sounds like its starving for fuel. it will stall if my foot is taken off the throttle all the way. so im gonna replace that and see whats what, i go home friday so im gonna give it a once over in the engine bay and make sure everything is on the right way and is tight. hopefully that will fix it, im gonna throw my new struts, springs, and passenger fender on too. so at least ill be standing better...

by the way, thank you guys for all the advice and support for this.

[GerryO]

i replaced all the injectors and they were tested from the distributor. i have the test sheet. pulled the plenum like half way and just picked it up to get them on. brands new upper and lower o rings, pressed the injectors into place no problems there, im assuming its not my injectors since they are new but i may need a new fuel filter i think.

by the way, thank you guys for all the advice and support for this.

It might be worth ohm-checking each injector and it's hard to picture pulling the plenum half way and picking it up enough to press in the injectors. We're you able to clean the surfaces, and replace the delicate paper gasket between and intake manifold and the plenum?

[chaunceysj]

id be worried about the plenum gasket not being sealed. did you replace that as well or make sure it was completely intact? you might have a baad vacuum leak and it would be running awful if it even starts up. i had a friend who mounted just the balance tube wrong and it didn't wanna run well at all. wouldn't even start right. just a thought. and your sure the wires are all hooked up to the right sparkplug/injector?

[nick1809]

we couldnt get the plenum to pick up and come out of the bay so we just lifted it up wicked high. got all 6 inbc i took the fuel rail out, put them in, and put the whole assembly back in. i made sure the gasket was intact, nothing was wrong with it at all. i may have put the balance tube on wrong. that is a posibility. it was noon when i did it and had been working through the night so i got kinda sloppy. haha. butim going home tomorrow so ill be going through and making sure eeverything is bolted down right and plugged in.iam gonna change my fuel filter as well because it kinda sounds like its starving for fuel. im gonna check the plug and injector wires and make sure those are plugged in right.

[chaunceysj]

we couldnt get the plenum to pick up and come out of the bay so we just lifted it up wicked high. got all 6 inbc i took the fuel rail out, put them in, and put the whole assembly back in. i made sure the gasket was intact, nothing was wrong with it at all. i may have put the balance tube on wrong. that is a posibility. it was noon when i did it and had been working through the night so i got kinda sloppy. haha. butim going home tomorrow so ill be going through and making sure eeverything is bolted down right and plugged in.iam gonna change my fuel filter as well because it kinda sounds like its starving for fuel. im gonna check the plug and injector wires and make sure those are plugged in right.

go check through the engine bay, look for any loose hoses gaps between seal etc. sometimes there are so many hoses that things wind up not getting connected. so just take your time and try and hunt down anything out of the ordinary. sounds like its starving for fuel? do you know if the fuel pump is running? if not you wouldn't have any fuel pressure and it undoubtedly wouldn't run. fuel filters not a bad idea to replace but i'm not sure it would suddenly get worse for the new injectors? just take your time and let us know what you find.

[nick1809]

i can hear the fuel pump because i stripped out the rear of the car and the pump is behind my head. haha. and, i kinda think the fuel filter was part of the problem when i replaced my injectors. its a $13 fix so im just gonna pop by autozone and grab one. but i will let you know.

[chaunceysj]

find anything out yet?

[nick1809]

nothing. -_- i think im gonna give up and go the expensive route. have it towed to a shop and have them fix it :'( so my little Slicktop isnt gonna be running for a while. hopefully i can get some money together quickly. but until then , i have some struts and sprongs to mess with and put on. i saw your thread but i dont know how im supposed to get the strut tops off. im not using spring compressors so i think that could be the problem.

[chaunceysj]

either buy new top hats or rent a spring compressor from an auto parts store i'm sure they rent them.

[nick1809]

aight. ill prob. just buy one.

[nick1809]

got the compresor. how far should i compress it? and what do you reccommend using to get the top bolt off??

[chaunceysj]

once the strut assembly is out just put them on the springs and slightly tighten. basically so the spring cant decompress more. then use two open wrenches to remove the top hat. on that fits over the slot above the threads and one on the nut itself. then hold the small wrench still so the shaft wont spin and loosen the nut

[PAintballa45]

its pretty easy to do with the rental from autozone just MAKE SURE you compress the two different sides equally, if you dont it can pop off...not fun. I did it myself, it was pretty easy, and alot easier with an impact gun. If you know a shop with one of the wall mounted ones then do that because it will cut the time in half. The hardest part is getting the top hat lines up correctly.

[chaunceysj]

its pretty easy to do with the rental from autozone just MAKE SURE you compress the two different sides equally, if you dont it can pop off...not fun. I did it myself, it was pretty easy, and alot easier with an impact gun. If you know a shop with one of the wall mounted ones then do that because it will cut the time in half. The hardest part is getting the top hat lines up correctly.

[nick1809]

word. oh, the small open end wrench for the flat part on top of the strut to keep it from spinning is A 9MM. and i would add to use an 11/16th open end on the bottom strut bolt. it works on the passenger side where you cant get a ratchet.


*EDIT: just realized, your post dis-f***-appeared. lol. did it get deleted or moved somewhere?**

[chaunceysj]

word. oh, the small open end wrench for the flat part on top of the strut to keep it from spinning is A 9MM. and i would add to use an 11/16th open end on the bottom strut bolt. it works on the passenger side where you cant get a ratchet.


*EDIT: just realized, your post dis-f**king-appeared. lol. did it get deleted or moved somewhere?**

awsome you got if finished already? pictures???
and what post are you looking for?

[nick1809]

your lowering the Z post. lol. and, i didnt finish it yet. i have to do the other 3 corners. we didnt have an 11/16th's open end wrench so we couldnt get the passenger side done.
that and, i had to leave to come back to school. lol. so its gettin done this weekend. haha. then, i guess im gonna pull my codes and see whats what.

[BigTDogg (MA)]

i can hear the fuel pump because i stripped out the rear of the car and the pump is behind my head. haha. and, i kinda think the fuel filter was part of the problem when i replaced my injectors. its a $13 fix so im just gonna pop by autozone and grab one. but i will let you know.

I would advise against running anything other than OEM Nissan fuel filters. There have been threads with the aftermarket ones cut apart, and it's scary.

[chaunceysj]

ever finish lowering the car yet? what do you think of it?

[jesssam28]

What springs are you using?

[nick1809]

havent checked the site in a while ;/ so this has been neglected. lol. but im using Megan springs. and no i havent lowered the back yet. i do like the tuck in the front though haha. in other news, i got it to start and run! its still got problems but ill fix them soon enough.

[chaunceysj]

awsome! get the back done too and throw up some pics