halston2006

By "spark pack" do you mean E. C. U. unit, or is it something else? Spending $25 to eliminate that issue sounds like a good idea. How difficult is it to replace and where on the car do I find it? As for the plugs and wires, the last time they were replaced, Subaru wires and NGK plugs were used. I am not sure about the first time, but even at that point the light was on and the plugs and wires were original. Sounds like time to get the aftermarket manual. Also, I agree about the gas. If the issue was as prevalent as the dealer is saying, there should be a line of cars with the same problem, instead of my one car that has them scratching their heads.

The noid light idea sounds good. I'll try it this weekend and re-post. Thank you.

The code is P0304 - cylinder 4 misfire. I spoke to the dealer today. They still think that I'm using bad fuel, although I have been using nothing but brand name premium from a station other than my regular station. Today they told me to use nothing but 89, and stay with one station. I'm not believing the low volatility diagnosis, especially since they told me that the light did not go off during my 3 tankfulls of premium gas because of the volatility of all of the gas could be questionable. That would be believable if they had other vehicles with the same problem.

2001 Outback, 90k miles. Check enginge light (cylinder 4 misfire) has been on for approx 8 mos. Car periodically idles rough. Repair shop changed coil, wires, plugs, which did not fix problem. Second repair shop changed wires & plugs 3 months later which did not fix problem. Went to dealer 4 mos. later. Dealer checked fuel volatility, which was 3.5. Used 4 tanks of premium fuel from brand name stations, went back to dealer with light on. Dealer had car for 3 days, could not find problem, even though they contacted Subaru New England about problem. Ultimately changed the o2 sensor, but the light came back on 2 days later. Dealer says volatility is still about 3.5, but I'm using the best gas (premium) I can find from the major stations. Any Ideas?