No compression in one cylinder

Tiny
KENNETHDEMARCO
  • MEMBER
  • 2001 SUBARU OUTBACK
  • 4 CYL
  • 4WD
  • AUTOMATIC
  • 207,000 MILES
I did a compression test and one cylinder has no compression. In that spark plug that I pulled from that cylinder the ground electrode was touching the central electrode. The other three plugs were gaped properly.
Air filter is soaked with oil. Will start but blowing white smoke from/through air filter intake.
What can I do? What is the issue?
Saturday, March 24th, 2018 AT 9:04 AM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,796 POSTS
Good afternoon.

You will need to have the cylinder head removed and inspect the valve train for any damage. It could be a burned valve, or a damaged piston or rings.

At this point, it is impossible to tell without removing the head.

Are you doing this yourself or is a shop performing this operation?

Roy
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Saturday, March 24th, 2018 AT 1:17 PM

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