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Discussion Starter · #1 ·
Well hello to all again this weekend guys.

I was on this site last week asking some questions on injectors that I know nothing about. I would like to thank everyone who gave me some feed back but, here I go again...

The car I am talking about is a 1981 280 zx and for some reason all my injectors are leaking and when I say leaking, I mean pissing out like in spoonfulls. They all seem to be leaking in the same spot on the injector and that is right on the clip part of were the wire and little plastic boot connects the side of the injector if that makes any sense. I don't know anything about injectors since this is the first car with an injector I have owned but, I can't help think that for all the injectors to start leaking at the same time, it's very unusual. Today I have changed the fuel pressure regulator . It's the first time all week I have had a chance to look at the car. but no inprovment

Anyways guys, I need some feed back on why all the injector would start leaking at the same time or maybe thats normal? Like I say, I know nothing about them.

Just for curiosity, today I checked out the price of news ones, they are 77 bucks each at cdn tire .If I replace them I think I will go with origianl nissan injectors. Are they all the same? Some feed back on that too guys .
I guess what I really want to know is about my injectors.

Thats all for now and thanks in advance.

[email protected]
holland landing, ont canada
 

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Well, first off, don't run the car with injectors that are leaking that bad. Or at least don't run it outside so that when it catches fire, it won't burn the garage down, too. About a year ago, Sherco (http://www.sherco-auto.com/) was selling Spearco brand injectors for $16 apiece. Don't know if they still are, but you can check. I'm running a set of these on my '76 and have had no problems. If they don't carry them any more, shop around. You can find rebuilt injectors for a LOT less than $77 apiece. Alternatively, you could have your injectors cleaned and rebuilt. This runs from $15-$25 per injector, again depending on where it's done. Just type 'injector cleaning' into any search engine to find one. You can also fix it yourself if it's just the hose, but it's a headache. You have to cut the old hose off, cut exact lengths of new (fuel-injection ONLY) hose, get all new fuel injection clamps and screw it all together. If it's not the hoses, you're wasting your time with this step. Causes for injection leaking are if the car has sat for a long time (hoses and stuff harden and rot), change in gas formulations (every hose and injector on my '82 started leaking when California switched to their new gasoline 6-7 years ago.
 

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replacing the injector hoses in not a hard job to do. most important thing is not to damage the plastic barb on the injector... you can use a soldering iron to melt the hose at the base of the injector in order to remove it. buy some 5/16" fuel injection hose, cut each hose the same length as the stock ones. lube the replacement hose with gas and reinstall. be sure to use a solid band clamp on the top (don't use the slotted worm drive band clamps and do not put a clamp on the hose at the base of the injector)
If the injectors are leaking from the plastic where the clips meet the hose... time for new injectors.
may want to check your fuel return to make sure it is not clogged up. remove the spade connector from the starter and have someone hold the key in the start position. you should hear the fuel going thru the rail and back down the return line.
 

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and...

forgot to mention... having a factory service manual is worth it's weight in gold. You can get a reprint of the manual from either Dyment 1-800-247-5321 or
SCHIFF MANUALS 1-888-789-6882.
Check out www.ideal-z.com they have a link for courtsey nissan. on the courtsey site, they have videos for sale. another must have is ztherapys understanding fuel injection video. it will help you understand how and why the system works and repairs, ect. not a ton of info on the zx's but it will help if you don't have a clue...
 

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When I was young and stupid...

(As opposed to now, when I'm old and stupid). . . the manual specified quite clearly that I WAS to put a hose clamp over the barb on the injector when I replaced the hoses. So maybe the manual was wrong, but the injectors come with a compression fitting on the bottom and when you replace the hose, you can't use that, so it made sense that they needed a clamp down at that end as well as at the fuel rail.

Anyway, replacing those hoses may be an 'easy' job for some people, but I found it a royal PIA. It was a bear to get the old hoses off, and then if the new ones aren't EXACTLY the right length (mine weren't), it's really awkward trying to get the injectors back in the manifold. I had to cut and refit a couple of them. Then, of course, when it was all together and I fired it up, it turned out not to be the hoses as all but the injector body that was leaking (this was my first experience working with fuel injectors). So I bought new injectors from NAPA for about $50 apiece. Funny thing about that that I didn't discover for years was that NAPA only shows one part number for the injectors and whaddya know, I had a turbo, which needs bigger ones. It still ran well around town but I never could figure out what seemed to be a fuel starvation problem at high R's. D'OH!
 

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Injectors...

I work in auto parts at Canadian tire in Calgary, I think 70 bucks for the injecor is ok, but personally i would go up for the turbo injectors, there are conviently 6 in all of canada lol. I posted a few mins about about a seal kit for them, i think you could maybe rebuild them, it costs 1.99 for the seal kit, and I believe that there is a bunch located in the winnipeg warhouse, maybe even toronto. So if worse comes to worse and you decide to rebuil them, it will cost you 12 bucks plus tax, and will be a 4 day wait at the most for them to be in transit To Tornoto and area

-Emir
 

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Discussion Starter · #8 ·
Re: oops

thanks guy
i guess i should be more explive om where i live makes it easyer for everone but anyway thanks for the info and holland landing is about 40 min north of torontoanyone reading this from that arera and they know a good z mec i would realy apperete the mec i talk to well they would admit it but they don,t jack about my car some one that realy knows would be nice to talk to anyway thanks again and iwill look into a rebuilt kit but like i was saying in my first entery is it normal for all the injectors to go at the same time or not some feed back on this is what iam looking for and one more time thanks again
 

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Is that $77 Canadian

You can get new fuel injectors from Motorsport Auto for US$50 (about $79 Canadian) and I think they are original Nissan injectors which is what I recommend. If all your injectors are leaking heavily from the wire plugs then they're probably shot and you should replace everything. Remove the fuel rail and replace the injectors, mounting blocks, O rings, and all fuel injection hose. While you're at it I'd also replace the fuel feed hose, fuel filter and return hose (high pressure 5/16" fuel injection hose only). It's not as easy to remove and replace the fuel rail as the manuals describe but be patient and you can do it.
 

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Re: Is that $77 Canadian

Unfortunately, we also have to add shipping, GST and PST and any applicable customs duties.

The CTC injectors are from Standard Motor Products / BlueStreak Ignition, I have used them with no problems.

$77.03 CDN each is a fair deal up here in the soon to be frozen north.

I, personally, would not use turbo injectors in a N/A engine unless the air flow system was upgraded.

Wayne Monteath
Masham, Quebec.
 
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