Ricky Trussell
New Member
- Joined
- Feb 28, 2003
N/A engine 383 with fast b2b wb02 and timing control. This is a street car. Starting after 1750rpm the engine starts leaning out. this last through the next cell (2100) then clears up. This is at 56kpa and above. At 2450 which is the next cell it clears up.
At 1750 rpm my cell values are high 60's, at 2150rpm I can go as high as 95 and still have a lean reading. This is also true at 56kpa, 62kpa, actually all the way up the kpa scale at 2150rpm, but as soon as it leaves that cell the lean condition is gone.
I have;
turned off wb02 correction
changed plugs
changed wires
checked timing
I thought this could be a miss which would make 02 read lean.
I am dead on with target a/f on both sides of the 2150rpm cells and all over as far as that goes.
Also with the car out of gear and holding steady rpm at 2000 the engine runs lean enough to hunt around. If I change the cell value to 110 it clears up.
I have a accel ignition box and new distributor which is all that is left to change but I'm getting tired of throwing new parts at this problem.
I am lost and my forehead is getting bigger!!!!!!
At 1750 rpm my cell values are high 60's, at 2150rpm I can go as high as 95 and still have a lean reading. This is also true at 56kpa, 62kpa, actually all the way up the kpa scale at 2150rpm, but as soon as it leaves that cell the lean condition is gone.
I have;
turned off wb02 correction
changed plugs
changed wires
checked timing
I thought this could be a miss which would make 02 read lean.
I am dead on with target a/f on both sides of the 2150rpm cells and all over as far as that goes.
Also with the car out of gear and holding steady rpm at 2000 the engine runs lean enough to hunt around. If I change the cell value to 110 it clears up.
I have a accel ignition box and new distributor which is all that is left to change but I'm getting tired of throwing new parts at this problem.
I am lost and my forehead is getting bigger!!!!!!