1993 Honda Civic Leaking oil

Tiny
G3392KE
  • MEMBER
  • 1993 HONDA CIVIC
  • 4 CYL
  • FWD
  • MANUAL
  • 235,000 MILES
My 1993 Honda Civic has 253,000 miles and has given me no problems since I bought it. I am the original owner. Recently it started blowing oil out from under the valve cover. When you remove the oil filler cap while it is running you can feel and hear air puffing out from inside the valve cover. I have been told it is probably a blown head gasket. What do you think?
Monday, February 16th, 2009 AT 8:45 PM

1 Reply

Tiny
F4I_GUY
  • MECHANIC
  • 3,302 POSTS
What you are feeling is crankcase pressure. Every motor has a little blowby pressure because the piston to not fully seal against the cylinder walls. A little pressure is fine, but if it is excessive you may have an engine problem or a failed PCV system.

First I would check to make sure that the pcv valve and hose is functioning properly, and if it is, I would do an engine compression test.
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Monday, February 16th, 2009 AT 8:52 PM

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