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1998 Jeep Grand Cherokee using a lot of coolant and gas mil

Tiny
CENTRALPALADY
  • MEMBER
  • 1998 JEEP GRAND CHEROKEE
  • V8
  • 4WD
  • AUTOMATIC
  • 152,000 MILES
I have a 1998 Jeep Grand Cherokee with 5.2L V8. It recently started using a lot of coolant but I can't see any leaks on the ground or in the engine compartment. In the last two days the gas mileage has dropped almost by half. Any ideas?
Tuesday, October 19th, 2010 AT 8:17 AM

3 Replies

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
Have a compression check done on the engine and cooling system. Check the motor oil to see if there is any antifreeze in it. Since you can not find any leaks It sounds like a blown head gasket. When you take out the plugs examine them see if they are clogged. When it is running is there any white smoke comming from the exhaust?
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Tuesday, October 19th, 2010 AT 9:27 AM
Tiny
CENTRALPALADY
  • MEMBER
  • 2 POSTS
Recently there has been white smoke for about 5-7 minutes after starting.
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Tuesday, October 19th, 2010 AT 1:47 PM
Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
Have a compression check done, sounds like a hrad gasket that is bad.
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Sunday, October 24th, 2010 AT 10:08 AM

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