martingmc86
Member
- Joined
- Dec 10, 2022
- Posts
- 45
- Reaction score
- 4
- Location
- california
- First Name
- martin
- Truck Year
- 86
- Truck Model
- gmc sierra 1500
- Engine Size
- v8 5.0
Yes I’ll post pics in a bit
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Yes I’ll post pics in a bit
O2 voltage should be constantly varying back and forth between 0.1v and 0.9v as the computer constantly adjusts fuel. high volts is rich and it pulls fuel (fuel trims will be below 128). low voltage is lean and it adds fuel (fuel trims will be above 128). ideal AFR is around 0.5v, but it will never sit around 0.5v for long.
are you having oil consumption?
might post some pics of the plugs after theys are fouled.
HelloSee if your timing actually advances,no advance will foul plugs. Monitor O2 sensor voltage with a multimeter,postcresults. O2 sensor has to be hot to work so monitor hot.
To be honest, about four months ago, I replaced the valve guide gasket seals, but I have not noticed oil consumption on the dipstickHi! So does your timing advance? Are you burning oil?
Let me test with a timing lightSo third time asking,does your timing advance?
So I checked the timing with the ESC connected and it’s showing 32° and with the ESC disconnected it’s showing a 11°So third time asking,does your timing advance?