280ZX (S130) Forums Dedicated to 79-83 ZCars

quick question about injectors

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Old Jul 1, 2008 | 11:40 AM
  #1  
midwest83280z's Avatar
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quick question about injectors

I have a 83 280zx n/t and 2 of the injectors are suspect. One of my buddies has a nearly new set of turbo injectors that i can buy from him for cheap but i'm not sure if this will make my car run rich and crappy or possible hurt something in the long run. I would just go out and get a new set but I just had a kid and money is pretty tight and i need my car running.

Any ideas about this or should i be ok?

thanks in advance.
Old Jul 1, 2008 | 12:01 PM
  #2  
lifegrddude's Avatar
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Buy n/a injectors. Don't use turbo injectors unless you have quite a bit of work done to your Z. We had another member here who went against that advice on his naturally aspirated Z, and it ran poorly until he finally realized it was mistake.
Old Jul 1, 2008 | 12:08 PM
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280zx2by2's Avatar
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MAF is a BIOTCH!!!!! get the n/a's at autozone... i cant find my recept but i think it took about $280 but i replaced all my holders and got extra seals just incase i fudged up the installation... but i didnt.... cause im a master mechanic.... no changing them was pretty easy except for when i was trying to get the fuel rail off and i had to start taking off alll kinds of parts to get it off so i just cut off a bracket and saved like 2 hours... its at the front of the motor and you know it when you get there
Old Jul 1, 2008 | 12:11 PM
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midwest83280z's Avatar
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thanks for the quick replies guys.

much appreciated!
Old Jul 1, 2008 | 10:26 PM
  #5  
nismo619's Avatar
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I tried putting turbo injectors on my x gurlfriends 1983 280zx na auto... i can tell u what happened after driving the car for about 25 miles it built up so much pressure inside the gas take that the gas stoped dead in the road... too much pressure... when i took off the gas cap gas really squirted out... high high high high high pressure kinda scary if u think about it " metal locking cap to a metal gas pipe " never the less i got some used fuel injectors off a 1985 ? nissan maxima 810 ? with the L-6 engine from the junk yard... workd fine never looked back...
Old Jul 2, 2008 | 02:46 PM
  #6  
lww's Avatar
lww
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Now I'm stumped. The injectors should have had no effect on the pressure in the fuel system unless the fuel pressure regulator was faulty. The only conditions I can think of are that the flow rate on the injectors was too high for the fuel pump to keep up and you would go lean or if your return line was clogged and even then, you should have had vacuum built up in your tank not pressure.

Now that I think about it, there is absolutely no condition that would allow pressure to be built up in your gas tank, even with a completely failed fuel pressure regulator that was allowing full bypass. You should still have a vacuum in your tank.

You sure you didn't connect the boost gauge to your fuel return line?
Old Jul 2, 2008 | 05:01 PM
  #7  
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thats what i was thinking when i read it ... i would figure you would have less pressure with a higher fuel rate turbo injectors and a N/A regulator

the only way i see a pressure build up is N/A injectors and turbo regulator?
Old Jul 6, 2008 | 06:41 PM
  #8  
midwest83280z's Avatar
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figured it out

i pulled the injectors and stabbed out the filter inside of them and it runs like new again.
Old Jul 6, 2008 | 07:54 PM
  #9  
lww's Avatar
lww
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Originally Posted by midwest83280z
figured it out

i pulled the injectors and stabbed out the filter inside of them and it runs like new again.
Now, this has me worried... How exactly did you "stab out" the filter inside the injectors?
Old Jul 6, 2008 | 08:13 PM
  #10  
280zx2by2's Avatar
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wow that is a good way to temporarily do the job.... i just hope your fuel lines are fresh and new
Old Jul 6, 2008 | 08:18 PM
  #11  
Mhinrichs's Avatar
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Originally Posted by 280zx2by2
wow that is a good way to temporarily do the job.... i just hope your fuel lines are fresh and new

No, thats a horrible way to do the job, don `t encourage Z abuse or I will become a moderator and ban you.

For about 15 bucks, most of your local auto repair centers can clean the injectors for you. Using a mixture of cleaner and ultra sonic waves to break stuff apart. Then you still have those little filters to keep gunk outa the injector itself. You don`t think its a big deal now, but wait till one or two of those sticks themselves open, or closed. Sheesh. Some people.
Old Jul 7, 2008 | 12:03 AM
  #12  
duowing's Avatar
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or do a cleaning rig like I've done. You could do the super simple method. Bowl, or container of fuel/cleaner mix, pump feed line in container, then the pump out connected to fuel filter, then directly to injector. Hook everything up to battery and make sure you have the injector spraying back into the container. The fuel/cleaner mix will have no where else to go, but through the injector. It will free everything up and get it spraying correctly. The fuel filter will catch the excess debris. I actually managed to plug a fuel filter with how much junk came out of my injectors. You could see the difference in the spray though.
Old Jul 7, 2008 | 06:49 AM
  #13  
NismoPick's Avatar
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Filters are overrated... what have they done for us lately?!

Oh wait....
Old Jul 7, 2008 | 08:52 AM
  #14  
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Originally Posted by Mhinrichs
No, thats a horrible way to do the job, don `t encourage Z abuse or I will become a moderator and ban you.

For about 15 bucks, most of your local auto repair centers can clean the injectors for you. Using a mixture of cleaner and ultra sonic waves to break stuff apart. Then you still have those little filters to keep gunk outa the injector itself. You don`t think its a big deal now, but wait till one or two of those sticks themselves open, or closed. Sheesh. Some people.
you have completely missconstrewed my comment... but mabe i should have had a instead of a
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