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Old 10-12-2012, 11:36 AM
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doru doru is offline
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Location: Calgary
Join Date: Sep 2007
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Mein Auto: 2003 530iA
Originally Posted by Jason5driver View Post
Hi D...!

I HIGHLY suspect the CCV...
Speaking from experience...

IMO, the sooner the CCV is DELETED/ or replaced with a better option, the better...

But i had good gas mileage with the old CCV & new CCV. Then it started to slip away. the mpg readings are consistent with the lower range I get. I'm at 450 Km (280 miles) between fill-ups now.... No smoking, no white vapors nothing. Tailpipe is clean as it gets, but looks like somehow I burn more fuel?

P.S.: this summer, after I cleaned the TB & ICV, changed the sparkplugs & vacuum hoses, the mpg improved suddenly. Lasted only about a week, then it slipped abruptly (from the "normal" 10.8 - 11.2 l/100km to 13.2 l/100 Km). I am stumped.

Last edited by doru; 10-12-2012 at 11:39 AM.
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