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89T
10-30-2009, 08:22 PM
sooo, somebody out there possibly want to take a timing light out to their beloved 3rd gen and get me a couple of readings?
i need a reading at idle, 1000 and 1500 rpms.
preferably a bone stock car.

or anybody with a obd1 swap want to post their timing map on a screen shot? I'll post mine if you post your's..lol

The reason for this thread is that i am trying to figure out a issue with atomized fuel coming out of the exhaust at idle.
2ndGenGuy
10-30-2009, 11:01 PM
Doesn't the flywheel only have a few marks on it? How do you read how many degrees of advance you have when it goes past those marks? Is there a special timing gun for that?
Rendon LX-i
10-30-2009, 11:49 PM
i agreed you should be at 5 plus bone stock ...shit i forgot. but im close. Ill get back to you on that bro
Nafs Asdf
10-30-2009, 11:54 PM
Doesn't the flywheel only have a few marks on it? How do you read how many degrees of advance you have when it goes past those marks? Is there a special timing gun for that?

Yup, I got one of those. It's got a dial on it so you can adjust the light between 0-60° advanced I think.
89T
10-31-2009, 05:40 AM
shoot i forgot all about it. You would need a timing gun with the dial on the back.
you would turn the dial till the tdc mark is on the pointer.

thanks for the reply's guys keep 'em coming.

what i am trying to figure out is why my car wont idle unless it's pig rich. I can adjust the fuel trim and lean out the idle section by 1% but it will gradually lean out and die.
89T
10-31-2009, 09:18 AM
ttt:)
89T
10-31-2009, 11:55 AM
any help out ther guy's?
Oldblueaccord
11-01-2009, 12:12 PM
Timing at idle should be rock steady, I dont really see how it could make it run rich/lean unless it is way way out of spec. This is just what I think with out knowing your set up.

Whats your wideband eading at idle?

Are your injectors double firing maybe at idle.

wp
89T
11-07-2009, 08:46 AM
i have the injectors set to fire once per two rev's, so i dont think thats the problem.
here is the spark map.
lower left will be idle.
http://img407.imageshack.us/img407/2294/sparkmap1.png (http://img407.imageshack.us/i/sparkmap1.png/)
Oldblueaccord
11-08-2009, 11:10 AM
Not sure ...shows your 15 degrees BTDC up to 1500 rpm that sounds about right. Change it to 10 if you think it will make a differance.

Stock size injectors? Fuel pressure low (lower) at idle. Maybe to injectors are not firing correctly and real low settings.


wp
89T
11-09-2009, 06:31 PM
Not sure ...shows your 15 degrees BTDC up to 1500 rpm that sounds about right. Change it to 10 if you think it will make a differance.

Stock size injectors? Fuel pressure low (lower) at idle. Maybe to injectors are not firing correctly and real low settings.


wp
I'll try changing it to ten tomarrow after work.
i am running RC 850's and fuel pressure is set to 41 psi .
Oldblueaccord
11-11-2009, 03:08 PM
I wonder if you could call RC and see if they will run down low enough. With a 2 liter motor they may not be accurate firing wise at low pulse levels. Dunno what else to tell you really.

EDIT:

http://forums.haltech.com/viewtopic.php?f=16&t=1652

Seems possible just need the right way to control them.


wp
89T
11-11-2009, 05:18 PM
hmmm. food for thought .
thanks for the help. I was wondering if i needed to bump the fuel pressure up because of a suspected weak spray pattern. Who knows if it will help.

I will do some research, and i have a line on an auto tune feature for the Holley commander.
the coolant temp modifier may be off as well.
Oldblueaccord
11-27-2009, 11:35 AM
any luck chuck?


wp
89T
11-27-2009, 04:33 PM
I have been busy with my truck so i have not had the chance to mess with it.