No compression in one cylinder

2001 SUBARU OUTBACK
207,000 MILES • 4 CYL • 4WD • AUTOMATIC
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KENNETHDEMARCO
  • MEMBER
  • 1 POST
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?
Mar 24, 2018 at 2:04 AM
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ASEMASTER6371
  • ✓Experienced 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
Mar 24, 2018 at 6:17 AM
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