4AGZE running way to rich

[punkture]

okay before you all become keyboard warriors telling me to google it and learn, i have!

as some of you would know, i have a stock ecu afm dli 4agze in my ta22, i was getting no boost before hand, so i blocked all exposed vaccuum lines what i was told went to EGR etc..

-still no boost soooo i checked continuity of s/c clutch ground from relay when it was over 2000rpm, no continuity, meaning no ground; so needless to say i hard wired the sc clutch to check if it was mech or elec problem and fark me she booted well =) no problems until i got her back and she started popping etc.. took out plugs no*1 and 2 where okay, 4 was wet as all hell, she now idles lumpy as.. any suggestions? thanks oh yueah made 9 psi??

[YLD-16L]

Given cylinder 1 and 2 plugs are fine you can rule out a dead coil.

Try swapping the lead on cylinder 4 with another one and see how that goes and or replace plug 4.

[punkture]

mmk, plugs are freaking brand new lol =( ill clarify further, Theyre all black at end, but 1 was dry, 2 was wetter but not much at all, 4 was drenched. could i have damaged anything? why would it continue to run like this? could it be the fuel pressure regulator? i have no Fuel VSV, Air bypass VSV... and no 02 sensor hooked up,

[YLD-16L]

The more info you provide the more it sounds like you need someone knoweldgeable to have an actual look at this set up and check over everything as it sounds like a nightmare form reading your other posts and there could be any number of prblems with this setup that have not even been realised yet..

If it's not firing on number 4 cylinder it'll wash the bore = not good.

If the plugs are new and "all black" at the end then it's running very rich but it also could be that you're just starting and stopping this engine all the time while working on it that's fouled them.

Check all the plugs for spark before progressing.

Also, what plugs are you running and at what gap?

[punkture]

lol (dont flame me) standard NGK no iridiums for this enigne, std gap, not to sure what it is, just looked around more, turns out i NEEEEEDDDDD the FPR VSV.. i have the ACV VSV but no FPR one, app tells ecu when boosting, but still unsure how an O2 sensor not hooked up would cause it to run rich..? was running on 4 cyls before sc kicked in..

[YLD-16L]

NGK's are fine, that's all I use. Save the irridiums for cars where it's a prick to change the plugs.

Standard gap? Which is????? 1.1mm?

The O2 sensor won't affect anything except cruise and idle, so that will contribute to plug fouling at idle.

Was there plumes of black smoke out the exhaust when it was on boost??

Sounds like the ECU just decided to run incredibly rich as a self preservation because it's not all connected up properly and that fouled your plugs or contributed to fouling them.

[punkture]

um no but a shitttttt load of whhite smoke and smelt like a 2 stroke motor bike, now theres no white smoke, its the wet plugs and firing unburnt fuel which lets bme know its rich. but how does the ecu make it run rich? nothing electronic controls fuel??

[YLD-16L]

um no but a shitttttt load of whhite smoke and smelt like a 2 stroke motor bike, now theres no white smoke, its the wet plugs and firing unburnt fuel which lets bme know its rich. but how does the ecu make it run rich? nothing electronic controls fuel??

Unless you've fitted a drawthrough carby the injectors are controlled by the ECU.

[TERRA Operative]

You don't need a VSV for the fuel pressure regulator, just hook the vac line from the FPR straight to the intake manifold.
My GZE has been running like that for ages with no dramas.

[punkture]

hmm, soundign good to me terra =) ummmm well why would she be riching up, only after i boosted her, are you runiing stock ecu with an o2 sensor? turns out they run closed loop at idle, (when i back off it pops remember) and open loop (pre mapped injector settings) on throttle, should i try and get a oxy sensor? and where from, bosch has no listing fpor a GZE =(

[TERRA Operative]

I would run an O2 sensor. Any 4 wire O2 sensor will work, get one with a 2 bolt flange and you'll be set.
All O2 sensors are the same, all that changes is the mounting method and the plug. Match up the wires (get a waterproof plug from Repco etc, the black ones) and stick it in your pipe and you're set.

I am running the stock ECU (well, an AE92 4AGZE ECU, but same difference) with the O2 sensor. I get a tiny bit of a popping on decel sometimes, but that would be due to my engine mods.

Make sure your MAP sensor is connected straight to the intake manifold too. Also, if you check out the throttle body swap in my site www.jdmlevin.com there is the procedure for setting the TPS correctly. It's worth checking, just to be sure.

[YLD-16L]

How about, you connect everything up properly, double check it all and then see how it goes and if there are issues.

If something is not connected be it vac lines or electrical find out what it is and if it needs to be connected before going any further.

Otherwise all this internet diagnosis is a fruitless effort and people will be less likely to help you in the future.


Remember Psalm 3:17

The lord helps those who help themselves.

With the "lord" being Toymods and "those" being you.

[ra23celica]

I had a similar problem with my 1G-GZE. The resister packs that sat above plugs 4, 5, and 6 had cracks in them that would leak the spark to earth, but only when under load. Another thing to check and cross off your list - HT leads?

[Hen]

I agree with YLD. Unless you sit down and check through everything methodically you will always be chasing your tail.

Firstly check to see if your ECU has stored codes and/or is throwing codes (search for it if you don't know how). If it is, address the problems suggested.

If your SC isn't earthing or switching properly from the ECU I'd be suspicious of your wiring. Take a wiring diagram (club4ag tech section), a few evenings and a slab and work through ALL your wiring.

Hen

[punkture]

lol cheers fellas done all of that before, i narrowed it down to these things being sent to ecu (recieved from sensor) the OX, and KNK. i need to find an oxy sensor lol.
I cleaned plugs and idles fine now, still very rich, (can see fuel being spat up from exhuast), but idling calmly now =) thabks for all your help, tomorrow ill hook up the check connector and see for codes, how did people time there codes? i have the code times, just seeign diff methods thats all =)