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1998 Ford Explorer Lost all compression

Tiny
SCUBA.DIVER
  • MEMBER
  • 1998 FORD EXPLORER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 150,000 MILES
4.0 SOHC engine. My Explorer lost all compression. It turns over like all the spark plugs are gone and using a compression gauge it has no compression. The engine does build oil pressure and I can see the left cam gear turn when cranking it with the starter. The fan does turn so I can rule out a broken crank or timing chains. What is my next option?
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Sunday, February 14th, 2010 AT 1:51 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
Is there 0 compression or is it just low? For there to be 0 the valves have to be open, holes in the pistons, or the timing is completely off.

Let me know.

Joe
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Sunday, February 14th, 2010 AT 2:12 PM
Tiny
SCUBA.DIVER
  • MEMBER
  • 3 POSTS
The compression is 0 and I applied air thru my compression tester hose and I can hear the air flow change from the intake to exhaust but no air flow from the valve cover breather so I don't think it is holes in all the pistons.
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Sunday, February 14th, 2010 AT 2:48 PM
Tiny
SCUBA.DIVER
  • MEMBER
  • 3 POSTS
It has been the better part of a week and I have not gotten a response since my last post.
I guess they want some money. That isn't going to happen and I am not recommending this site to anyone.
Nice try 2carpros but you have fallen short on this problem.
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Friday, February 19th, 2010 AT 12:16 AM

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