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I first noticed it yesterday riding around town. starting off low rpms in 1st & 2nd it would ping slightly. Since I hadn't ridden it for almost two months I just thought it was probably there before and just didn't remember.
Well today riding along the interstate I noticed it when accelerating at about 5000 rpms. It was hard to hear through the wind, but it seemed like when I would then let off the throttle slightly it would cut out just briefly. Off the interstate back in town, I started noticing it again. If I were driving along at a constant speed and hit the gas suddenly it would ping very briefly then go away.
Gas mileage is fine, (33-35) but power seems a little lacking when exceeding 5k rpm in 4/5 gears.
I switched to a higher octane fuel and it seemed to clear up the lower rpm pings.
The only thing I have changed, is I put in a K & N air filter. I first thought maybe vacuum advance was screwing up - but then I didn't think that should cause ping around 5000 rpm. I also suspect bad fuel?
any thoughts?
Well today riding along the interstate I noticed it when accelerating at about 5000 rpms. It was hard to hear through the wind, but it seemed like when I would then let off the throttle slightly it would cut out just briefly. Off the interstate back in town, I started noticing it again. If I were driving along at a constant speed and hit the gas suddenly it would ping very briefly then go away.
Gas mileage is fine, (33-35) but power seems a little lacking when exceeding 5k rpm in 4/5 gears.
I switched to a higher octane fuel and it seemed to clear up the lower rpm pings.
The only thing I have changed, is I put in a K & N air filter. I first thought maybe vacuum advance was screwing up - but then I didn't think that should cause ping around 5000 rpm. I also suspect bad fuel?
any thoughts?
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