Got a set of injectors since mine were junk and the car was missing, installed the new set and now the car wont start it will crank but wont fire up, if u spray ether in it it will start and die right away, thing is we disconnected the line after the fuel filter and there seems to be enough fuel when u cycle the pump, so for some reason its not getting through the injectors or something between the filter and the injectors, any suggestions would be great thanks

 

Check for ecu codes and check the appropro fuses and relays, for starters.

 

did you plug the injectors back in... are your plugs good. My experience is that the injector plugs get really really really really really really really really really really really really corroded and it's usually a good idea to replace them while doing injectors... I havn't replaced mine but have done others because they've all been the same way. I always keep a spare plug in the tool box though (i've had to use it once)

 

also are they plugged in the right way? and did mayb the injector orings get pinched or installed wrong.. could cause some problems there.

 

I'm pretty sure it's how you routed your fuel lines; I made this mistake once too.

On the driver's side of the engine bay, going into/coming from the fender area, there are two fuel lines - the supply and return. The supply obviously goes into the filter and then into the FPR, then dampener, then fuel rail, while the return just goes from the rail to the fender area (back to the tank, really). I'm willing to bet you crossed these two at the hard lines.

The reason this will cause a problem is that the fuel pressure regulator is directional - fuel can only flow forward through it (that's how it maintains pressure). So if you have the fuel going backwards through the system, it will stop dead at the FPR. This is likely why it's showing symptoms of being starved for fuel.

You could, obviously, simply reverse these two lines and see if that solves your problem, but you might be able to tell visually. If these two fuel lines cross each other (form an X anywhere), they are routed incorrectly. They should never cross (the fuel sending line is more forward in the engine bay than the return, and it connects to the hard lines in front of the return line as well).

Let me know if that was your problem - if not, I have other ideas, but since even I have made that mistake before, and I've helped other people with the exact same problem, we're going to start there.

 

the fuel lines are definately routed right, we checked all the spark plugs and all the injector plug ins all are good, we seem to have fuel on 2 plugs but no others, maybe the injectors are junk?

 

Are the injectors new or from the junk yard?

 

they are new

 

check make sure the injectors are getting a signal to open. (go to radio shack buy a little LED and put it on the injector plug when u turn it over the led should flash.) that will tell you if they are getting signal to open or not.

 

already checked those and they are all working

 

Sounds like you know what the prob is... Pull the injectors & test them one by one. Maybe they have dust in them... or just take them back & say "GIMME ONES THAT WORK, BEETCHES!"

 

how can u test them?

 

You can do it several ways...

Pull the injector rails but leave the fuel lines connected if possible. Pressurize the line (turn the key to on to have the fuel pump prime) and w/ wires connected to a 9v or 12v (cordless drill) battery, tap the terminals of the injector to make it spray. No spray = clogged / not working injector.

Or just yank each injector, hook each one up to a hose, connect a water nossle to it, turn on a slight amount of water & tap the terminals w/ the battery & wires.

Make sure you shake out & blow dry the injectors before re-installing.

 

your idea number one makes perfect sence.

second IDea is idiotic water kill injectors. don;t do it. just do the first one. if it dosent spray send them back and ask for an exchange/ refund. and get some from datschwerks.

 

2nd. The reason so many early style injectors die on the 300ZX is oxidation. It's usually caused by alcohol in the gasoline, but water can rust the injector too. I'd never put anything other than gasoline through an injector, and I limit it to ethanol free gas at that.

I'll be back in a little while with more ideas, I just wanted to see if that solved your problem before heading out.

 

Fuel damper or regulator is my bet. Likely some gunk from your crapped injectors and fuel system was still in the lines. When you replaced the injectors did you replace your filter, damper and regulator at the same time?

Otherwise, walk it back and see what you overlooked. If you find nothing then I would say the above before I say they are crap injectors...unless they have a little name called Venom. Were they new and not remanufactured?