jeep

2000 JEEP GRAND CHEROKEE
V8
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APRILJ
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2000 jeep grand cherokee. 4.7 127000 miles. after idling large puff of smoke comes out. smells odd. awful gas mileage. between 9and 11 mpg. new cat. new plugs. old ones were corroded or burnt off? Please help, thanks, april
Jun 23, 2011 at 7:13 PM
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RASMATAZ
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Do you have a check engine light and when was the last tune-up??

What's the color of the smoke-blue/white/black???
Jun 23, 2011 at 7:20 PM
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APRILJ
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no light. basic spark plug change acouple months ago. but they didn't do anything else. they said that was all that was included in tune up? had jeep for 2 years and no problems until now. it looks white to me. before changing cat it smelled sulphuric but now it smells different?
Jun 23, 2011 at 7:26 PM
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APRILJ
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also it is burning oil but no leak. i just put in 2 quarts and it has 700 miles before next oil change. Guess that is important part. :)
Jun 23, 2011 at 7:27 PM
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RASMATAZ
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Are you overheating? White smoke indicates coolant is being burned-If not have the engine compression check-start here
Jun 23, 2011 at 7:32 PM
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APRILJ
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engine compression check? no overheating at all.
Jun 23, 2011 at 7:34 PM
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RASMATAZ
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You said its burning oil not leaking-do an engine compression check to determine if its valves/ring/cylinder wear problems
Jun 23, 2011 at 7:36 PM
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APRILJ
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do you know how much and where to go for that
Jun 23, 2011 at 7:41 PM
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APRILJ
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would one of those things be reason for awful gas mileage
Jun 23, 2011 at 7:42 PM
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RASMATAZ
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Engine problems will reduce the fuel economy
Jun 23, 2011 at 8:20 PM
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CJ MEDEVAC
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SOME INEXPENSIVE PLACES TO TRY!

TAKE TIME AND CALL AROUND--MAY SAVE SOME $$$

SMALL MOM AND POP AUTO SALVAGE YARD--THEY WILL SOMETIMES DO THIS FOR YOU, OR KNOW A RELIABLE LITTLE SHOP WHO WILL.

TECH SCHOOL/ HIGH SCHOOL AUTO MECHANICS CLASS--SOMETIMES A SMALL DONATION

ASK AT YOUR LOCAL AUTO PARTS STORE--SOME OF THOSE GUYS MIGHT DO IT ON THEIR OWN TIME

THE MEDIC
Jun 24, 2011 at 12:35 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.