Surging Idle and Smoke

id like to help, but ive been having the same problem too. as soon as i put the spout back in the car runs like crap. no smoke, but the surge is there. i cant figure it out...

The search button will help........have you checked your TPS to see what it is at........did you clean your MAF ..........could be the small things causing this.............at least it's a start......welcome to :SNSign:
Will

welcome to :SNSign:

this forum is great, the guys (and girls) on the 94/95 board are the best.

i often have a big cloud of smoke when i start mine up. i am about 90% sure it is due to having an old motor that was driven hard (by the previous owners) and is having blow-by. the excess pressure in the crankcase causes lots of oily vapor to be vented through the pcv and coats the inside of the intake. when the car sits for a while, the oil in the intake settles down near the valves, and when i start it up, the oil gets into the cylinders and i get a big cloud.

re the idle, do you have an aftermarket cam? i'd try backing the timing off a little, maybe 12*?

Try setting the timing to 10* or maybe even 8*. That should help, but I think a custom tune will be required to fix it. Also, is the MAF calibrated for correct size injectors?

man.... theres only one way to find out if theres a cam isnt there i wish i knew what was done to this car.
Ill try changing my timing and post the results

if im running without the spout, where do i set my timing?

The computer on the 94 -95 cars use timing to control idle if there is a rich or lean condition. I would guess that because you just put on alum heads you are getting more air and you may be lean. The adaptive control in the EEC can only adjust the fuel about +/-10% then the timing takes over to try to keep the car running. The timing will swing way up and down sometimes up to 26+* and back down to 16-20* to keep the car running. With the spout out your take out the computer and run the 14* and it stops surging from the timing swings. Without a programmer like the twEEcer there is not much you can do but there are a few things you could try.

first set make sure there are no vaccume leaks!!!!!!!!!
set your timing back to 10* (factory) for now
check your fuel pressure is at 39psi (no vac)
make sure your tps is @ .98vdc

Once all these basics are covered pull your Pos batt cable for about 20-30 min. reconnect and start the car without touching the gas. let it find the idle (don't touch the gas). Once it settles down let it idle for a min or 2 then take it for a ride to see let the computer learn a little.