help me please. Recently, I've noticed starting at about 2k, and ending at 3k, theres a hesitation in acceleration. Becomes bumpy. Just cruising, not really at WOT. Not sure if im explaining clearly. I've asked a couple of friends, and they are pointing me in the direction of my spark plugs. Which would probably make sense. At WOT, my wideband is reading as low as 10.0 flat. So I could be fouling the plugs I guess. Scott Siegel is supposed to be fine-tuning the car again when he comes back into town. Any suggestions or ideas? Thanks guys.

 

Your friends are probably right. You need to pull the plugs and check them.

 

thanks. they are only about 300 miles old. would the affects really already start happening? im fine if its just the plugs, thats a cheap fix. i just dont want it to be something huge.

 

dont try to diagnose anything until you fix your uppipe leak. Call in to the shop, they said they can find the flange you are looking for.

idk what mileage you have, but scheduled service to replace plugs is 30,000 miles. Mike is doing mine today.

 

mine does this too

 

wrong matt. i dont have an uppipe leak. thats concordcobra. and according to mastro subaru, scheduled service to replace plugs is 45,000 miles. i only have about 300 miles on these plugs.

 

you get my pm matt?

 

damn too many matts lol.

dont remember the site i found my list on, but here is another.
Subaru maintenance schedules and new car break-in period
says spark plug change should be at 30k... The hesitation could also easily be from the car not being 100% tuned.

 

yea

 

can you shoot me a pm about what i messaged you about?