KA24e doesn't want to idle/ have searched and tried alot

[breadbox]

I have a 1989 240sx with a KA24e, stock motor with a 5speed swap.

1) I got the car running after the swap after I fixed a vac leak where the lower and upper intake mate.

2) It drove fine and was torquey(guessing timing was slightly advanced) but I could hear chain slap in the front cover.

3) Replace timing set with a mechanic who knows what he is doing. Reset timing to stock and it drove okay but wasn't as torquey.

4) The next day I was driving home after getting tires. car started bogging and losing power, flooring it in 2nd or third gear only had me going 30MPH until it died on the side of the road.

Now when I start, it fires then dies and only stays running if I mash the gas all the way in and out repeatly. No idle.

Tried known good MAF and IAT, no change.
Getting spark on new plugs and wires.
Injectors pulse good
Sprayed around bay with carb spray, no idle change.
Idle screw adjustment does nothing
TPS is dead on, .5v to 4vWOT
Tried different ECU
Battery good
Starter good
Alt seems fine

Haven't tested fuel presurre yet.

Only video on youtube that even seemed to apply to these symptoms is the one talking about the big tub on intake that goes to the brass tube that runs parallel to the aicv and the other idle thing back there. but once again I sprayed carb spray and no vac leak.

Would either of those cause the car not to see throttle input and cause no idle?

I need to drive this car soon, Paying insurance for nothing sucks.

My last resort will be to jack out the motor and replace all hoses and delete all emissions.

I know it has a small leak at the top of the rad from a messed up tab.

I can't think of any other issues that would do this, maybe no fuel pressure.

I am open to any thoughts from the NICO crowd.

[breadbox]

Compression good.

Fuel pressure great after fuel filter.

I guess I will throw in a different dizzy. but I am just out if ideas, other than going through the harness which would make me upset.

[S133P3R]

Is your timing good still? (I see you say it was set to stock)

[breadbox]

yep. static timing dead on. I drove the car for a day abnd a half before this happened.

Timing should be something like 15BTDC+-2 degrees.

Gonna try another known to be good dizzy of my parts car. but if it doesn't work I will cry. and rebuild it again, searching for problems.

[S133P3R]

Is your alternator still good? Also there is a relay that can blow.

[breadbox]

which relay? Eng cont? or something weird. also read somewhere that a coolant temp switch(the two wire off the intake) can cause the ECU to do weird shizz too.

I can try another alt too. but I don't think its causing this. its dirty, but I think its still solid.

[S133P3R]

It a 75 amp relay, I think it's eng control. Aside from that, I'm not sure.

[breadbox]

Soooooooooo the oil pump spindle's gear teeth are slightly sheared, it jumped timing to 10degrees ATDC. Picking up replacements from home now.

afraid crank gear is f'd.

[breadbox]

Worm gear feels pretty rough. and new oil spindle skips timing too. So next I guess its time for a tear down of the front cover.

[S133P3R]

ack. i think i have a spare crank gear in a parts box... lmk, i ship if you pay!

[breadbox]

F!!!! I just typed an epic response and was denied by the internet gods. I want to punch through the keyboard right now.


ZEN

Thanx, I have another. Just pist I have to do it again. ^----Like other things in my life... dck.

This time I am looking for the culprit in the oil pan, plus there is probably a ton of shavings there too.

Should I just swap the long block and eliminate the headache of this one? I will steal that fresh guide back.

[breadbox]

I have to thank you again for helping with this. I've had two very knowledgeable people helping me and they were surprised as I was. Classic example of looking in the last place.

[S133P3R]

I have to thank you again for helping with this. I've had two very knowledgeable people helping me and they were surprised as I was. Classic example of looking in the last place.

Want to help diagnose my ticking valves? Or at leAst that's what I think it is. Damn loud that's for sure.

[breadbox]

When was the last time the oil seals in the head were replaced?

What oil are you running?

You could try to add some mystery oil and see if it quiets down a bit.

[S133P3R]

When was the last time the oil seals in the head were replaced?

What oil are you running?

You could try to add some mystery oil and see if it quiets down a bit.

gonna try RISLONE i think... just had the bottom end rebuilt and was working off a spare head to get refreshed rockers (in-process)... ill post some videos in a seperate thread.

[breadbox]

So somehow the worm gear got thrown on backwards. Sucks for me. Good news is I can fix tomorrow.

[S133P3R]

Ooof. Can't say that the majority of engine failures weren't of my own hand. Well maybe like 30% or less but still. Good luck with that.

[breadbox]

Fixed it, and it fired up great. Gonna do an Oil/ filter change change tomorrow. Buy a ton of hose clamps and replace alot of random oem clamps that were pissing me off during this process. I need to dial in the timing in the dizzy with a light and fix the couple things so I can update this 2006 inspection sticker.

Need a silencer/different exhaust. 2" striaght pipe sucks on the ears. works great but drones.

[breadbox]

I haven't dialed in timing, because its hard to do during the day and usually busy at night. Hopefully I can do it today/tonight.

Set my TPS to .45 v to 4.20v at WOT <----kinda the closest it wanted to get to .5v to 4.vWOT.

But it still hesitates. but hopefully after getting shizz right with the timing gun things will get right. Also seems to idle loe pretty low when it get a little warmed up. The idle screw doesn't do much... :/

[breadbox]

Temp gauge still no worky. IDK why yet.

Also friend gave me a silencer that did something but it still sucks. <--- turbo would quiet the exhaust down.

and found a small coolant drip, haven't found out if its front cover, therm, or water pump... or random coolant hose.

Did oil change. thinking about changing out coolant temp sensor.