Hooray, just got my car back. Looks like the problem with the misfire in cylinder 4 was a bad fuel
08-01-2008, 12:55 PM
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Hooray, just got my car back. Looks like the problem with the misfire in cylinder 4 was a bad fuel
injector. And a new purge valve seems to have solved the Evap issues. However, looks like I now have a leaky brake booster. Anyone know if these things are hard to replace?
08-01-2008, 02:45 PM
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'Twas electrical. The injector kept registering different resistances whenever it was "tapped"
or hit on it's side lightly. Resistances, i believe, anywhere from ~12 to 300-something ohms. Anyway, with the diagnosis (for both the cylinder misfiring and Evap system) and the part, it was $500. Kinda steep, but whatever- I'm glad it's over and done with.
08-01-2008, 09:06 PM
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Congrats - that's gotta feel good. Can you elaborate on the "purge valve"? My PCV has...
...failed AGAIN - replaced *maybe* 20k ago and it's honking like a goose again, 1000000x worse than the first failure. I tore the "valve" apart last time and the rubber inside was severely degraded - nearly disintegrated. How failed in 20k again is beyond me.
Basically, I'm wondering is that what you mean by "purge valve"? My CEL's been on for 2yrs w/ only "EVAP" code, I've thus far ignored but I'm now due next month for biannual emissions - yay. Dropping it off in a.m. en route to 2wks @ beach for diag., any notes you can provide appreciated. Course I'll only have net access for another 6hrs - d'oh.
Again, congrats - and - TIA.
Basically, I'm wondering is that what you mean by "purge valve"? My CEL's been on for 2yrs w/ only "EVAP" code, I've thus far ignored but I'm now due next month for biannual emissions - yay. Dropping it off in a.m. en route to 2wks @ beach for diag., any notes you can provide appreciated. Course I'll only have net access for another 6hrs - d'oh.
Again, congrats - and - TIA.
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08-02-2008, 03:43 AM
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Hi Paul, I think we may be talking about different things. The purge valve I replaced looks like
the one in the link (it's located just rear-ward of the airbox). It doesn't look like it can be taken apart. If you are having problems with your PCV valve, I think that's a different issue, unfortunately, and I don't know very much about it. Sorry I can't be of any help, but I also don't want to lead you down an incorrect path by giving you false information.<ul><li><a href="http://www.autohausaz.com/search/product.aspx?sid=uh5qmx55b5ghgcvp11tsdtn4&make id=800002@Audi&modelid=1383016@A8%20QUATTRO%20 (AKB%20ENGINE)&year=2002&cid=valve@valve&a mp;gid=5888@Air%20Box%20Relief%20Valve">Purge Valv
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