P0304 from OBD II for 96 SL2, 85k mileage

The SES was on and off one day ago, nothing special on the car. I
pulled it to Autozone to read the code out, it was P0304. One misfire
was detected.

Two years back, I had same issue and had probably three out of four EGR
valves replaced in a shop. And also rewire the spark to 0.04.

Last time, when I did the oil change, I was recommended to replace
Valve Cover Gasket. Could this be related? I was told to perform
flushing engine as well.

And I think this is probably a minor issue to the car, no need for fix
right now (till this weekend)?

4 EGR valves? Huh?


"Simon" > wrote in message
oups.com...
> The SES was on and off one day ago, nothing special on the car. I
> pulled it to Autozone to read the code out, it was P0304. One misfire
> was detected.
>
> Two years back, I had same issue and had probably three out of four EGR
> valves replaced in a shop. And also rewire the spark to 0.04.
>
> Last time, when I did the oil change, I was recommended to replace
> Valve Cover Gasket. Could this be related? I was told to perform
> flushing engine as well.
>
> And I think this is probably a minor issue to the car, no need for fix
> right now (till this weekend)?
>