I`ve noticed every morning for the past week that my KJ smokes quite a bit but, not white or black smoke but rather grey/light brown. Constantly seen while driving and i`m wondering now if it`s not due to over fuelling perhaps as she`s been quite thirsty too. She drives ok, no issues from a power perspective.

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Jeep KJ, Liberty, Limited 4x4
2004, 2.8 CRD
Thule Roof Racks
GDE Eco Tune
2" EFS Coil & Shock Lift

Hi welcome to the forum!

Typically too much fuel is associated with black smoke....not really brown.....

Have you cleaned your MAP sensor recently? This could cause smoke under all sorts of different conditions(and a dirty map will also cause a decreased fuel economy).

Have you read the Noob guide yet?
(the noob guide is mostly geared towards USDM KJs, but there is useful info for the 04- people as well.)

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http://www.Colorado4Wheel.com
"Its not about what you can DO with your Jeep, its about where you can GO with your Jeep."
Knowledgeable - But Caustic

I removed the CAT - it was so badly clogged the poor motor was having issues breathing - smoke is a thing of the past.

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Jeep KJ, Liberty, Limited 4x4
2004, 2.8 CRD
Thule Roof Racks
GDE Eco Tune
2" EFS Coil & Shock Lift

Wow!
You removed the cat and welded up a new exhaust in under 50 minutes?
You work fast!

Where are you located? can you do mine next?

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U.S. Army Retired

Look closer at the time stamps. Over a year between the posts...

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Matt B.

05 Limited CRD. Bought it new. 112k on the clock now.

GDE Eco-tune, rear differential drain plug (drilled and tapped the pumpkin), transmission pan drain plug, Fumoto oil valve, fuel filler neck restriction removed, front hitch, Hayden fan clutch, Sears P1 battery since 08, Mobil 1 5w40, 5 volt glow plugs, DIY timing belt at 109k

Oops

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U.S. Army Retired