nonnieselman
July 23rd, 2024, 02:34 PM
Anyone see this happen?
Commanded AFR drifts from 14.7 (B3647 with COS3) to around 12.0 at warm idle.
Actual AFR follows and engine struggles to idle well.
Rev engine up to around 2000 rpms and let it return to idle. All is well unless you idle it for several more minutes then it drifts rich again..
Also have a issue on cold start it fires up fine and idles great.
But if you give it any throttle it goes really lean and wont rev up.
Give it time to warm up and it runs great.
Ive adjusted A0008 but it doesn't help any.
This truck has cathedral heads with an adapter to run LSA blower and Ive only heard bad things bout doing this.
Commanded AFR drifts from 14.7 (B3647 with COS3) to around 12.0 at warm idle.
Actual AFR follows and engine struggles to idle well.
Rev engine up to around 2000 rpms and let it return to idle. All is well unless you idle it for several more minutes then it drifts rich again..
Also have a issue on cold start it fires up fine and idles great.
But if you give it any throttle it goes really lean and wont rev up.
Give it time to warm up and it runs great.
Ive adjusted A0008 but it doesn't help any.
This truck has cathedral heads with an adapter to run LSA blower and Ive only heard bad things bout doing this.