Gollum Posted January 10, 2008 Share Posted January 10, 2008 (read: junkyard, on a lucky day) Heehee... not around here my friend. It's a very sad day if there aren't any EFI L28 cars in my local junkyard. Vehicles don't last there for very long, so stock changes constantly, and rarely are EFI sensors pulled from L series cars there. But there's usually at least 2-3 Z cars with L28 motors there. Finding a 240Z there is a whole different story... Quote Link to comment Share on other sites More sharing options...
TrumpetRhapsody Posted January 10, 2008 Share Posted January 10, 2008 Lucky! I can't find ANY junkyards around here that will even let me browse. Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted January 11, 2008 Author Share Posted January 11, 2008 Funny how this thread is progressing, Well I cant get it to start the injectors are not firing at all. I got it to ignite raw gas through the intake but it just wont catch. Ive tested all the injectors they work fine. They all clicked when I test them. Quote Link to comment Share on other sites More sharing options...
Gollum Posted January 11, 2008 Share Posted January 11, 2008 Stupid question... but fuel pump turning on? You really need to find someone with a pressure guage and check that fuel pressure... Too low fuel pressure is extremely common in these cars due to bad fuel pressure regulators. Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted January 11, 2008 Author Share Posted January 11, 2008 Stupid question... but fuel pump turning on? You really need to find someone with a pressure guage and check that fuel pressure... Too low fuel pressure is extremely common in these cars due to bad fuel pressure regulators. Yes,Fuel pump is buzzing and gas is getting to the injectors Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted January 15, 2008 Author Share Posted January 15, 2008 Alright Update, Cleaned all the contacts of everything ECU resistors etc etc. Car still wont start, I checked all my injectors again they work but they don't click when I'm trying to start it What would make them not click? Quote Link to comment Share on other sites More sharing options...
MJLamberson Posted January 15, 2008 Share Posted January 15, 2008 they work but dont click? doesnt that meen they dont work? is there power going to the injectors? Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted January 15, 2008 Author Share Posted January 15, 2008 they work but dont click? doesnt that meen they dont work? is there power going to the injectors? They click when a 9V is powered to them there not getting power by the Ecu, Could it be the resistor or something I'm honestly stumped and the Fuel Injection bible doesn't say that much about this sort of problem Quote Link to comment Share on other sites More sharing options...
MJLamberson Posted January 15, 2008 Share Posted January 15, 2008 I had the same problem once, it turned out to be a blown fusible link... have you checked those yet? Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted January 15, 2008 Author Share Posted January 15, 2008 Possible, Ill try the big piece of metal instead of fusible trick tomorrow and see what happens Quote Link to comment Share on other sites More sharing options...
MJLamberson Posted January 15, 2008 Share Posted January 15, 2008 Im betting she fires up, good luck Quote Link to comment Share on other sites More sharing options...
Daeron Posted January 15, 2008 Share Posted January 15, 2008 sounds like a bad dropping resistor maybe? You need what is called a "noid light" by some; it is a light that you plug in in place of the injector to show that your injectors are getting signaled to fire. It sounds like, for some reason, they aren't. The ECU "decides" when to fire the injectors.. thats most of its job. Either your ECU isn't being decisive enough (har har, we will ignore this possibility for now because you've checked all the input sensors) OR, the problem is between the ECU and the injectors. That points directly to the dropping resistor, and unless I am forgetting something (possible) the dropping resistor is the only thing between the ECU and the injectors, other than wire. Its been about two years since i actually cracked my bible... but it SHOULD tell you how to check the dropping resistor. IIRC, its bolted to the inner fenderwell, behind the driver's side wheel. The brake and clutch masters may be somewhat in your way, but you should be able to access it to remove without moving them. Check the resistor before you replace the fusible link with a solid piece of wire.. Please. Click on the link in my sig that says "Fusible Links Blow!" for a lengthy story on exactly why.... short version, when fusible links SHOULD blow, and they DONT......... things can get REAL bad REAL quick. Good luck. Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted January 15, 2008 Author Share Posted January 15, 2008 sounds like a bad dropping resistor maybe? You need what is called a "noid light" by some; it is a light that you plug in in place of the injector to show that your injectors are getting signaled to fire. It sounds like, for some reason, they aren't. That points directly to the dropping resistor, and unless I am forgetting something (possible) the dropping resistor is the only thing between the ECU and the injectors, other than wire. Check the resistor before you replace the fusible link with a solid piece of wire.. Please. Click on the link in my sig that says "Fusible Links Blow!" for a lengthy story on exactly why.... short version, when fusible links SHOULD blow, and they DONT......... things can get REAL bad REAL quick. Good luck. I'll test the injectors connector's with my multimeter, The dropping resistor drops the voltage for the injector's so its usable I've never heard of them breaking but theres a chance. I'm aware of the fusible's everything seems pretty clean to me though I doubt something will catch on fire. One the fusible's where bad for the Ignition relay, It was shorting out and such. I replaced it and turned it over, It didn't fire up but it has a hard time during cold starts anyways. Ill try again tomorrow Quote Link to comment Share on other sites More sharing options...
Gollum Posted January 15, 2008 Share Posted January 15, 2008 My car runs now. HA! Beat ya... Could it be a bad connection at the ECU? Just a thought... Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted January 15, 2008 Author Share Posted January 15, 2008 My car runs now. HA! Beat ya... Could it be a bad connection at the ECU? Just a thought... I was thinking that but I doubt it since it has run before. I've heard of people using Z31 or ZX harness connectors instead I may get one from my Pick N Pull Oh yeah and you bastard!! Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted January 15, 2008 Author Share Posted January 15, 2008 Alright so after cleaning all the contact's for everything, and replacing that fusible the motor has yet to start. The injectors show a slight blip on my multimeter but they still don't seem to work. I keep forgetting my tachometer is not working. Could this be related to my problems somehow? I also poured in more gas thinking it didn't have enough. Quote Link to comment Share on other sites More sharing options...
MJLamberson Posted January 15, 2008 Share Posted January 15, 2008 does it start with starter fluid? are the spark plugs wet after you crank it for a while? Quote Link to comment Share on other sites More sharing options...
Mr.INSANE Posted January 15, 2008 Author Share Posted January 15, 2008 I did two more test's. Control Unit Power Test Pg. 62 In Efi Bible Battery voltage did not show until turned to start position. This point's to the Power Relay #1 Injector Circuit test Battery voltage did not show until turned to start position. So this leaves me to believe its either wiring or the power relay Where is the power relay located at so I can test it? Quote Link to comment Share on other sites More sharing options...
RedEvilrps13 Posted February 4, 2008 Share Posted February 4, 2008 i can't find this fuel injection bible.....can someone point me in the right direction? ive been searching for like two days now.... Quote Link to comment Share on other sites More sharing options...
Daeron Posted February 4, 2008 Share Posted February 4, 2008 http://www.atlanticz.ca/zclub/techtips/ Find EFI & Fuel, scroll down. It is linked to from there. Sorry, I was lazy last night. For the benefit of future searchers: blue's tech tips page blue techtip efi bible manual book service fuel injection bible Quote Link to comment Share on other sites More sharing options...
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