Ricky Trussell
New Member
- Joined
- Feb 28, 2003
I had a post awhile ago on this problem and still have not found what is wrong. I wil ask for help again.
I will be in Memphis for the Fastest Street car World Finals if anyone wil be there and be willing to look at this let me know. I will gladly pay someone to tune this out or diagnose the problem!!
My VE table needs high 90's to 110's at 2000 rpm cells at 42-70 kpa to get a 13.5 a/f setting. I have low 60's before and high 60's to 70 after the 2000rpm cells.
The 1750 cells are +- .8% correction with low 60's. When the engine starts into the 2000rpm cells the 02 takes fuel out at 1900 but as soon as the engine gets fully into the 2000rpm cells it swings to adding 5 to10%.I have a low popping sound out the exhaust at 2000rpm but no where else.
I have checked the timing table, 34* is what I have. I have taken the timing down to 22* and this does reduce how much fuel the 02 adds but engine is still stumbling around. I have not added more timing because of the 02 adding makes me think it's lean, but the popping out the exhaust makes me think fat.
The engine runs good everywhere else. This happens on any speed or gear when in those cells.
If I push the throttle down slowly when it is in the 2000 cells it stumbles, the kpa moves up and then most of the time it pops out the throttle body. Popping out the exhaust I thought was fat, so why the pop out the throttle body? Could a vacumm leak cause this?
I have change wires then changed back. I have changed plugs and heat ranges. All my AE settings are close to what I was told to start with and I have moved them then moved them back with no change.
What should I be looking for on engine issues?
My combo is mild:
B2B system speed density
383 10.5 to1
AFR 190 heads
525 lift hyd roller 219 dur.
700r4 with 2500 stall 370 rear gear
3250 lb. car
I have run 7.90 at 89 mph on street street tires (2.1 60') shifting at 5800 so to me the engine seems okay at WOT.
Sorry for rambling!!!
I will be in Memphis for the Fastest Street car World Finals if anyone wil be there and be willing to look at this let me know. I will gladly pay someone to tune this out or diagnose the problem!!
My VE table needs high 90's to 110's at 2000 rpm cells at 42-70 kpa to get a 13.5 a/f setting. I have low 60's before and high 60's to 70 after the 2000rpm cells.
The 1750 cells are +- .8% correction with low 60's. When the engine starts into the 2000rpm cells the 02 takes fuel out at 1900 but as soon as the engine gets fully into the 2000rpm cells it swings to adding 5 to10%.I have a low popping sound out the exhaust at 2000rpm but no where else.
I have checked the timing table, 34* is what I have. I have taken the timing down to 22* and this does reduce how much fuel the 02 adds but engine is still stumbling around. I have not added more timing because of the 02 adding makes me think it's lean, but the popping out the exhaust makes me think fat.
The engine runs good everywhere else. This happens on any speed or gear when in those cells.
If I push the throttle down slowly when it is in the 2000 cells it stumbles, the kpa moves up and then most of the time it pops out the throttle body. Popping out the exhaust I thought was fat, so why the pop out the throttle body? Could a vacumm leak cause this?
I have change wires then changed back. I have changed plugs and heat ranges. All my AE settings are close to what I was told to start with and I have moved them then moved them back with no change.
What should I be looking for on engine issues?
My combo is mild:
B2B system speed density
383 10.5 to1
AFR 190 heads
525 lift hyd roller 219 dur.
700r4 with 2500 stall 370 rear gear
3250 lb. car
I have run 7.90 at 89 mph on street street tires (2.1 60') shifting at 5800 so to me the engine seems okay at WOT.
Sorry for rambling!!!