Skip to content
View in the app

A better way to browse. Learn more.

Ultimate Subaru Message Board

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Anti fouler drilling

Featured Replies

:horse: Sorry for bringing back an old thread. I just got the 0420 on my 02RS. Anyone here personally use the L shape non fouler and were able to get rid of the code long enough to pass an inspection. Its rough out in NYC as traffic *********************s are everywhere! Thanks!
Anyone here personally use the L shape non fouler and were able to get rid of the code long enough to pass an inspection.
if it works - it's not just long enough to pass inspection, it is a long term and excellent solution to a silly issue.

 

yes, folks use the L shape ones. if inspection is an issue i almost wonder if you'd rather have the straight spacers though for a more stock look? i don't know if that matters or not, my state doesn't check emissions.

I used the straight "help" brand non fouler since I could pick it up at the local auto parts store. Like it said before, I don't know if it will fit in the space you need it so look closely before you order. Maybe make a little cardboard piece and hold it in the spot. Remember the plug sticks out a few inches beyond the end of the L also. Good luck.

Thanks guys I'll place a order for it today. As long as it takes care of the 0420 code then I can finally pass inspection.

thanks guys i'll place a order for it today. As long as it takes care of the 0420 code then i can finally pass inspection.

nm.

Edited by brus brother

  • 11 years later...

A question on this remedy for the O2 downstream anti-foul; the ones I got on Amazon are probably 1/4" opening, do these need to be larger, drilled out?

 

Also does the upstream O2 sensor also need one of these.

Usually just for the downstream sensor.

It seemed to help.  At first the CEL was flashing; next trip none of that and runs better without sputtering.

  • 1 month later...

I got the spacer online and drilled it out with a drill I picked up at Lowe's, a pita but helped.  Thanks for the recommendation it should help others.

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.