well it sounds like I have an exhaust leak, but I also think im not getting as many miles to the gallon as I was before. Is it possible for an exhaust leak to cause a decrease in fuel economy?
exhaust leak?
Apr 23, 2004
1 Replies
The message from "Professor Frink" contains these words:
Depends where it is, but yes. The wife's Clio's exhaust went about an inch behind the lambda sensor a few weeks ago. The pulsating nature of the exhaust pressure, particularly that far up the exhaust can actually suck air in and even back up the pipe a short way - which means the lambda sensor thinks the engine's really lean so it bungs extra fuel down the hole.
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