87 Turbo Wont Stay Running
11-08-2003, 08:58 PM
#1
Junior Member
Thread Starter
Join Date: Nov 2003
Posts: 21
Hey guys, I posted this on rx7club.com with no help yet. A quick rundown of the car....1987 Turbo. T04E, E6k, custom exhaust manifold and turbo back. 720s, 1680s, aeromotive -10 fuel system, A1000 pump, GReddy 3row FMIC.
I finally got my car running. a 2 year project is almost at the end. Its hard starting, and acts like the timing is off, but i have not moved the CAS from where it was when i bought the car. Once it finally starts, it has tremendous throttle response, very crisp and quick revs. Watching the engine data page, the inj. pulse width is right around 9% (720cc primaries) and p/w is 6.xx ms. Then after about 10 seconds, the duty cycle jumps to 20-26% and the car sputters and dies. Once i clean the plugs off and reinstall them, it will do the same thing. The longest i have gotten it to run is approx. 30 seconds. I don't know what is making it become rich like this. BDC made my base map for me, and said it should be right on for my setup, which i believe, simple due to the fact that the throttle response is awesome. Any ideas? This is kind of disappointing...
I am officially lost. i cleared up a major vacuum leak, but other than that, i have no idea why it just decides to get richer and richer. I cant keep it running long enough to verify timing. Fuel pressure stays constant 40psi and there are no seen electrical glitches...
Any ideas out there?
Joe
I finally got my car running. a 2 year project is almost at the end. Its hard starting, and acts like the timing is off, but i have not moved the CAS from where it was when i bought the car. Once it finally starts, it has tremendous throttle response, very crisp and quick revs. Watching the engine data page, the inj. pulse width is right around 9% (720cc primaries) and p/w is 6.xx ms. Then after about 10 seconds, the duty cycle jumps to 20-26% and the car sputters and dies. Once i clean the plugs off and reinstall them, it will do the same thing. The longest i have gotten it to run is approx. 30 seconds. I don't know what is making it become rich like this. BDC made my base map for me, and said it should be right on for my setup, which i believe, simple due to the fact that the throttle response is awesome. Any ideas? This is kind of disappointing...
I am officially lost. i cleared up a major vacuum leak, but other than that, i have no idea why it just decides to get richer and richer. I cant keep it running long enough to verify timing. Fuel pressure stays constant 40psi and there are no seen electrical glitches...
Any ideas out there?
Joe
11-08-2003, 09:17 PM
#2
Senior Member
Join Date: May 2002
Location: California
Posts: 22,465
you need to find out why it richens up. is it because it moves to some wierd part of the map? or maybe the coolant correction? or air temp corrections? this shouldnt be too hard to figure out, its a map thing. you should also zero your timing, once it runs a little better
mike
mike
11-08-2003, 10:19 PM
#3
Senior Member
Join Date: Apr 2002
Location: IL
Posts: 2,930
what j9 said.
check the correction maps, somethings enriching it after that time goes by. Things heat up as time passes so it's probably not time related, more likely some correction map is doing something wrong.
check the correction maps, somethings enriching it after that time goes by. Things heat up as time passes so it's probably not time related, more likely some correction map is doing something wrong.
11-09-2003, 11:04 AM
#6
Junior Member
Thread Starter
Join Date: Nov 2003
Posts: 21
I can try, if the car will start. I had it running today, after i leaned out the cold start enrichment map and it still did the same thing. Its too bad i am new to this and have no real clue what i am doing! 
I will datalog asap.
I will datalog asap.
11-09-2003, 11:51 PM
#9
Junior Member
Thread Starter
Join Date: Nov 2003
Posts: 21
from another site, since i cant upload on this one.
http://bdc.cyberosity.com/haltech/maps/FCJSP1.KDM
Take a look at it and see what you think...
http://bdc.cyberosity.com/haltech/maps/FCJSP1.KDM
Take a look at it and see what you think...
