Idle problems and running rich

[dareon]

So my car has been idling iregullary latley which is nothing new to me. It has done this from time to time and somtimes would idle good. This time however it has been running extremely rich at the same time somtimes rich enough to see smoke. It has a new oxygen sensor and i measured resistances on the TPS and they seem ok. I just ran the error codes on the ecu and i got a 45 which i guess is a fuel injector leak. Any recomendations on a course of action would be appreciated.

[ricebike]

you've answered your own question

Quote »I just ran the error codes on the ecu and i got a 45 which i guess is a fuel injector leak[/quote]you are blessed w/ a CA-emissioned car which will state if you got a fuel injector leak, so go ahead & try to isolate which of the 4 is leaking... or just replace all 4 d/t the milage/age of them anyways

[dareon]

Is there any good way to try to figure out which one is leaking? And after i do that is there a recommend company to get the injectors/orings from?

[ricebike]

u must start your quest by searching

basically, you pull the injectiors w/ the fuel rail still attached to them, put it over a big container... reconnect battery & turn key on, but not to start engine... only to prime up the fuel system... look for da leak

[vancouverbc]

45 is injector leak, at least for 91-94

zerothread?id=179725

[UltraYellow35th]

I had the same problem on my 1991. The problem with mine was that one of the injector seals was leaking. It is very cheap to replace your injector seals. I would recommend getting them from a dealership.... but a word of caution.... I had to do it 3 times before I was able to avoid damaging the seals on the injectors when I put them in. In the end, I replaced all the injectors too.... which is expensive.... but I kept having the same problems with the new injectors because I was damaging the seals.... and I was really trying to be careful!

My advice for when you pull your injectors out of your fuel rail:

1.) Lube the seals before you try to put them back in.2.) Be very careful putting the seals onto the injectors so as not to damage them.3.) I wish I would have "cleaned up" the area on the fuel rail where the small seal comes into contact with it... by that I mean polish it up, or make certain the surface is very smooth and without any kind of corrosion.4.) Test your fuel rail for leaks before you put it back onto the intake manifold. I did this the dangerous method: by leaving it connected to the fuel lines and wrapping a big trash bag around the fuel rail to catch the fuel if it started leaking, then turning the key to the on position to allow the fuel pump to pressurize the system.5.) In case you don't know how to de-pressurize your fuel system: Pull the fuel pump fuse out of the fuse box..... start your car and run it out of gas. Obviously you would want to do this before you start pulling injectors.... and it only works when your car runs.

That's about all I have. Good luck to you.... It was the most troublesome repair I've ever had to do.

Josh

[ricebike]

i agree w/ Ultra... seems SOHC fuel injectors are 3x easier to remove/replace... esp when it comes to those seals; i only used engine oil on them & not petroleum jelly since they're that much easier.

here's an article on the DOHC fuel injectors:

zerothread/179894

GL!