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Jeep Wrangler YJ
YJ General Discussion
Exhaust manifold replacement: what else should I do at the same time? Share some wisdom & save me some time
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<blockquote data-quote="TimberTim" data-source="post: 436921" data-attributes="member: 20208"><p>exhaust leaks between the combustion cylinder and the O2 sensor will not pass a smog check . The 02 Sensor sees the fresh Oxygen entering through the cracks by way of the Venturi Effect and adds more fuel to the mixture to compensate for the misinformation. the results are a rich fuel mixture which can be smelled when the engine is running. Doc, I'll post my Smog Check readouts when I have more time.....Tim</p></blockquote><p></p>
[QUOTE="TimberTim, post: 436921, member: 20208"] exhaust leaks between the combustion cylinder and the O2 sensor will not pass a smog check . The 02 Sensor sees the fresh Oxygen entering through the cracks by way of the Venturi Effect and adds more fuel to the mixture to compensate for the misinformation. the results are a rich fuel mixture which can be smelled when the engine is running. Doc, I'll post my Smog Check readouts when I have more time.....Tim [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Exhaust manifold replacement: what else should I do at the same time? Share some wisdom & save me some time
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