97' Legacy Outback diagnostic codes

[Jay Fowler]

I've got a 97' Legacy Outback with 60000 miles on it. In the past 6
months, the check engine light has come on 3 times. The error codes
were P304 the first time and P302 & P304 the second and third time. I
recently replaced the platinum spark plugs. Has anyone had a similar
problem ? I do add a can of injector cleaner periodically.

 

[Bob Gibson]

What did you use to download the codes?

 

[Ricardo]

The codes you mention are "cilinder number # (P30#) misfire detected" so
your problem may be oil coming into the combustion chamber trough the rings
or the oil retainers from the valves.
I suggest to check your spark plugs when you have at least 300 miles driven
with them, in order to verify the oil burning.
Sorry for my English, but i live in Chile and my native language is Spanish

Ricardo