Spark plug foul up

[martingmc86]

Yes I’ll post pics in a bit

 

[martingmc86]

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.

 

[martingmc86]

See 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.

Hello

 

[Ricko1966]

Hello

Hi! So does your timing advance? Are you burning oil?

 

[martingmc86]

Hi! So does your timing advance? Are you burning oil?

To be honest, about four months ago, I replaced the valve guide gasket seals, but I have not noticed oil consumption on the dipstick

 

[Ricko1966]

So third time asking,does your timing advance?

 

[martingmc86]

So third time asking,does your timing advance?

Let me test with a timing light

 

[martingmc86]

So 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°

While the ESC was connected, I did rabbit up and the timing did move from my point of view