I need some help before I dive in!

[longhaireddwb]

I'm new to this forum and hope that someone can help with my little problems on my 1992 Nissan Stanza GXE, KA24E.

I recently bought it from a guy. He said he replaced the head gasket on it. I bought it and after a month I noticed that the Fuel Injectors were leaking. The car runs smooth so I went down to the local auto parts store and bought four seal kits for the four injectors. I replaced the two seals and the o-rings on all four injectors. Its still leaking! I used a little vegetable oil on the new o-rings to get thing to slip together nicely. No binding when it went together. Is it possible for the injectors to leak themselves? Not just seals?

Another problem I found was I herd a rattling in the valve cover. I pulled the valve cover off and found that the "Timing Chain Guide" the one opposite from the timing chain adjuster was sitting down in the hole. The bolt came off that holds it in place.Is it possible to put that part back in place without pulling the head and timing cover? If not, can you tell me what parts I need to buy to do this job besides a manual?

One more problem I'm having with this Stanza is that when I start it in the morning (cold start), It wont idle! but after it warms up it will idle too high (1400-1500 RPM's). I've checked all the vacuum hoses and they seem to be ok. What could be causing this problem? Is there a sensor that could be causing this and if so where might I find it? Remember, I have two of these cars so I can take parts off of one to put on the other to test things out. I just have to put them back because the wife drives one of them to school.

Thanks for any help you can give to me. This Stanza has over 180,000 miles on it and I bought it for $800. Both of my Stanza's have over 180,000 miles on them. I've posted this question in two different places on this forum because the first one got no answers. Please help!



I've done some searching and found a write-up on a timing chain replacement with pictures. That should help. Also found someone else having problems with the injector o-rings but no finished answer yet on that. I'll do some more searching.
Modified by longhaireddwb at 11:49 AM 1/19/2007

[Bwana]

As far as the fuel leak goes... I've never had injectors just leak. It's typically either the o-ring on top (into the fuel rail) or the lower ring (uncommon). Usually if they leak internally it leaks down into the intake and causes over fueling issues. Best I can say is, pinpoint exactly where it's leaking, and go from there. It could conceivably be your fuel rail too.

Take care of the timing chain, NOW! Here's a link to an article I made a couple weeks ago regarding this procedure. It's for a 240, so there'll be some differences, but the basic principles should be the same. Hope that helps! Post up if you have any more questions!

[rogoman]

The car runs smooth so I went down to the local auto parts store and bought four seal kits for the four injectors. I replaced the two seals and the o-rings on all four injectors. Its still leaking! I used a little vegetable oil on the new o-rings to get thing to slip together nicely. No binding when it went together. Is it possible for the injectors to leak themselves? Not just seals?

One more problem I'm having with this Stanza is that when I start it in the morning (cold start), It wont idle!

You may have gotten O-rings that don't fit correctly.

Here's somthing I found on one of the forums:The Nissan parts fiche lists different o-rings depending on year.

For cars built 07/88 - 01/89, use 16600-40F00

For cars built 01/89 - 02/89 (only for 1-2 months!) use 16600-40F10 for 1,4 and 16600-40F15 for 2,3. The 1,4 o-rings are supposed to be black, the 2,3 ones blue.

And then for cars built 2/89 - 7/90, it reverts back to the first 16600-40F00 part number. These ones are listed as orange.

The build date should be listed on the doorjamb sticker.

- - - - - - - - - - - - - - - - - - - - - - - - - -

There is a device mounted on the engine called an air regulator which islocated on the passenger's side of the engine, near the back, below theintake manifold. When the engine is cold and idling, the air regulatorallows additional air to flow to the engine thus maintaining a good idle.There's a good chance the air regulator is defective or the electricalconnections are bad.

[longhaireddwb]

Thanks for the reply Bwana!

I did find your artical today. I do have a couple questions. Why do I need a flex plate tool and what is it for. I do have an automatic but I didn't think I would need to separate the trans? As far as the gaskets, i'll need the two for the timing covers and one for the oil pan right? What are the two o-ring seals for? I don't have the manual yet but I plan on getting one before I dive in.

Also, as I stated before, I replaced the seals and o-rings on my injectors and I used vegetable oil on them to make things slide together better. Now from reading some other posts I find that I should have used grease. I'm not sure what difference it makes but I did this same job on my other Stanza three years ago and I used grease then and it didn't leak afterwards. I guess I'll give it another try. The only problem is I hate to run the engine to see if the injectors are leaking when my timing belt guide bracket is bouncing around in the hole sense its bolts are missing. I'm just hoping that the PO didn't strip the treads on the bolt holes for the guide bracket.

I guess I just needed to vent my anger and dive into the mess.

Thanks again for answering my post and stay warm! I see you live in the same snowy state that I'm in.

And thank you rogoman for you answers. My car is an 92 so it don't fall into any of those categories. If I could find the proper measurements on the right o-rings I might be able to find them and try again. In the mean time I'm going to try it with the grease and see if it helps at all.

And thanks for telling me about where this item is that controls the idle. As I stated before I have two of these cars so I'll take the one out of the good idling car and put it in the bad idling car and see if it fixes the problem. Of course I'll have to put it back so the wife can drive hers later. Thanks again. Jerry...

Thank you both again!!! Jerry...
Modified by longhaireddwb at 4:53 PM 1/19/2007

[Acecool]

It IS possible for the actual injectors to be leaking, which is what happened to me...

The plastic bit on the top can leak where the plug connects into it...

Get some new ones from Deatschworks, call them up and ask for stock replacements.

[longhaireddwb]

I'm trying to check on parts for doing this job. What are the 2 seals your talking about? Are they on the tensioner or are they on the crank or cam, or are they on the covers? Please specify for me.

I'm ordering a chain, tensioner, both guides, oil pan gasket, timing cover gaskets, and what else?

What if I order a timing chain set, gasket set and oil pan gasket. Would that cover the front seal and two o-ring seals you guys are talking about? Help!
Modified by longhaireddwb at 8:38 AM 1/20/2007

[longhaireddwb]

OK, I got the parts and now to come up with the time. Thanks for the help. I reset the injectors and now I'm down to one leaking just barely. We will see what happens now. Its much better. Maybe after a few miles It may stop seeping.

I'm still waiting to get an answer on why to remove a part in the oil pan and where a part is. If you would like to help please go to one of my other posts. Thanks.