Amsoil P.I Additve

[daveams]

my check engine light went on,and came up 2 error codes 1oor fuel system "lean mixture" and. 2:multiple cylinder misfire.

same time i had Amsoil PI in the tank..could that additive have triggered that check engine light?

 

[oilboy123]

The PI cleaning stuff that maybe got on the O2 sensors or temporarily fouled the plugs.
Take the vehicle out and tromp on it a few times. I would assume the codes will go away after awhile. Or you could try resetting the codes.

 

[Turk]

+1.

 

[oilboy123]

I meant to say contaminates the PI knocked loose that got on the O2 sensor or plugs.