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Jeep

Tiny
APRILJ
  • MEMBER
  • 2000 JEEP GRAND CHEROKEE
  • V8
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
Thursday, June 23rd, 2011 AT 7:13 PM

10 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a check engine light and when was the last tune-up?

What's the color of the smoke-blue/white/black?
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Thursday, June 23rd, 2011 AT 7:20 PM
Tiny
APRILJ
  • MEMBER
  • 6 POSTS
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?
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Thursday, June 23rd, 2011 AT 7:26 PM
Tiny
APRILJ
  • MEMBER
  • 6 POSTS
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. :)
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Thursday, June 23rd, 2011 AT 7:27 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Are you overheating? White smoke indicates coolant is being burned-If not have the engine compression check-start here
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Thursday, June 23rd, 2011 AT 7:32 PM
Tiny
APRILJ
  • MEMBER
  • 6 POSTS
Engine compression check? No overheating at all.
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Thursday, June 23rd, 2011 AT 7:34 PM
Tiny
RASMATAZ
  • MECHANIC
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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
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Thursday, June 23rd, 2011 AT 7:36 PM
Tiny
APRILJ
  • MEMBER
  • 6 POSTS
Do you know how much and where to go for that
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Thursday, June 23rd, 2011 AT 7:41 PM
Tiny
APRILJ
  • MEMBER
  • 6 POSTS
Would one of those things be reason for awful gas mileage
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Thursday, June 23rd, 2011 AT 7:42 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine problems will reduce the fuel economy
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Thursday, June 23rd, 2011 AT 8:20 PM
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
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
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Friday, June 24th, 2011 AT 12:35 AM

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