Recent content by kar1179

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99 7.4 data log help, running rough and rich

Thanks guys. Misfire - There are no misfire counters on this for me to look at, oddly. Earlier today I ordered a Chinese GM Tech 2 clone, should be here by the end of the week, and I can check then. Wires - I'm sure they are correct. The wire holders are still in place - not sure they would let...
- kar1179
- Post #6
- Aug 10, 2022
- Forum: Engine Performance + Maintenance
K
99 7.4 data log help, running rough and rich

Also forgot to add, I checked for vacuum leaks (sprayed Brakleen all around the engine compartment) and found none.
- kar1179
- Post #3
- Aug 8, 2022
- Forum: Engine Performance + Maintenance
K
99 7.4 data log help, running rough and rich

More screenshots
- kar1179
- Post #2
- Aug 8, 2022
- Forum: Engine Performance + Maintenance
K
99 7.4 data log help, running rough and rich

Hello - Hoping someone smarter than i can help me decode symptoms and data. '99 Suburban K2500 7.4 New to me rig - yesterday I replaced the spark plugs (just maintenance) and all 4 O2 sensors (had P0141 and P0161). After, upon restart, it was running incredibly rough and exhaust reeked of gas...
- kar1179
- Thread
- Aug 8, 2022
- Replies: 6
- Forum: Engine Performance + Maintenance