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View Full Version : KA idle/emisions issues


Devil Man
06-02-2008, 09:00 AM
Let me start of by saying that i have a 95 motor in a 91 I have deleted the egr and the vac lines under the TB and where they go to in the rear. i followed http://www.project-mayhem04.com/EGR%20Removal.html (http://www.project-mayhem04.com/EGR%20Removal.html) to remove my emisions. first i cant figure out what do i do with the larger of that vac line under the TB does that just get concected to the intake? if anyone has a better pic of there KA with all the emisions removed and could post it that would be a great help to me.

Now the car idles at like 1000rpms.. i cant figure out anything else other then the vac line that is under the TB when i put my finger over it it slows/ kills it so i think that this is controling the idle but i did also remove the egr aswell. also would the timing with the help with the idle. it seems to be running eh ok while its idleing but once i hold the throtle at 2000rpms its sputering and missing(i have some old and new gas mixed so this could be helping the problem) mind you that there is no exhaust on the car other then the headers. so to try to solve this high idle issue i tweaked down the idle screw, but that only makes it pulse some what between 500-1000rpms, im i hopeing that once i can get it to idle at the proper rpm i can then figure out why its missing weather it be the ignition being off or the cam timing(which i dont think it is but its possible)

also for some reason the car is running really rich. i have only run the car for maybe a total of 30 min and the plugs are already black. i have a brand new o2 sensor, but i have read around alot! and have found that with the removal of the egr this may cause the KA to run even richer. so what should i do to solve this problem?

and please dont tell me to serch cause thats all i have been trying to do reading other peoples issues for the past 2 days, but i havent seem to have gotten the answer that i needed from any of the other threads.

oh and something that i forgot to say that may help, the car has been sitting for about 2 years i want to say.

something else that i just remeber was that when i swaped the motors i took the exhaust cam and used it for the intake cam, im sure some of you have heard of doing this cam swap between the s13 to s14 motors... how would this influence my timing now.

Devil Man
06-04-2008, 10:39 AM
anyone with any ideas please?

xsparc
06-04-2008, 10:54 AM
which large vac line? i think there are like 2 or 3. one is for the PCV and the other goes to the FICD and the AAV.

It sounds like you have a bad vac leak.

Devil Man
06-04-2008, 01:57 PM
mmm let me see if i can try to take a picture of this. there are 4 hard lines under the TB. one is larger then them all and i do belive that one goes to the pcv. everything else has been deleted following that link that i put.

xsparc
06-04-2008, 02:02 PM
sounds like you missed something, reread that page in the section about the vac lines.

los_inc
06-04-2008, 02:40 PM
take a picture of your setup i can help you from there PM ME if anything -los

fujima
04-14-2009, 03:41 PM
I did the same thing and i'm having the same issue. Did you ever fix this problem? If so, I'd like to know how also. Thanks!

surreybc
04-14-2009, 10:08 PM
Intake Manifold: Guide to Removing Emissions: KA24ET / KA24DET Forum: Nissan Forums / Infiniti Forums - NICOclub (http://forums.nicoclub.com/zerothread/411262-intake-manifold-guide-to-removing-emissionsl)



http://i143.photobucket.com/albums/r136/hinds90/egr1.jpg

kim_jong_il
04-14-2009, 11:25 PM
I have a 96 S14, swapped over to a 95 manifold to have a cleaner setup (fewer bolt holes and etc) and removed everything. That whole vacuum block ont he back of the head can be removed. I tapped all my PCV ports on the runners for NPT plugs and closed them properly. EGR is fully removed, I had a block off plate made at a local sheetmetal place years back when I lived in Alabama (brought them an EGR gasket and they mocked it up in the computer and plasmu cut me a piece). The only vacuume lines should be to your FPR and your Idle control valve on the back of the manifold. Other than that it should be clean.