blackbirdls1

iTrader: (5)

Anyone here got a reader? Car running super rich and mis firing. Generic OBD2 saying the P0300.

jetech

. Have the spark plugs been changed recently?

blackbirdls1

iTrader: (5)

A year ago or two ago, car is barely driven.

jetech

Check/listen for a vacuum leak?

blackbirdls1

iTrader: (5)

I havent looked at it. I inspected the engine bay/hoses and all looks well.

jetech

Any update?

blackbirdls1

iTrader: (5)

Yeah, Passenger side plugs are all fouled. I took all the plugs out and I'm deciding if I just want to go further and start taking this car apart since there are other issues that I want to address and refresh.

jetech

Drivers side plugs are good?

jetech

maybe do a cylinder leak down test on all cylinders. That will tell you the health of the engine rings and sealing of the valves. If that test is in the acceptable range possible the passenger side head needs valve guides and seals