Gas mileage up and down

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03-15-2015, 01:05 PM

#16

TFitzPat87

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Join Date: Apr 2014

Location: Detroit, MI

Posts: 1,418

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Year: 1997

Model: Cherokee

Engine: I6 4.0L

Appreciate it guys. I've started my log today. We'll see what it turns out to be.

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03-15-2015, 02:17 PM

#17

mr white

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Join Date: Aug 2011

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Model: Cherokee

Quote:

Originally Posted by jeffcycles

How much influence will a cracked exhaust manifold have over mpg?

It will run rich as *****.

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03-15-2015, 06:34 PM

#18

mschi772

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Join Date: Mar 2012

Location: Racine, WI

Posts: 974

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Received 8 Likes on 7 Posts

Year: 1997

Model: Cherokee

Engine: 4.0

Quote:

Originally Posted by mr white

It will run rich as *****.

Oh the trusty *****-based scale of measurement.

But yeah, cracked headers often do reduce fuel economy.

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