HAVE A TOYOTA 93 1.8 MANUAL ,TESTS DONE AND FOUND CYLINDER 4 PRESSURE LOW ,WHAT DOES THIS MEAN ?

  • Tiny
  • Angieee
  • 1993 Toyota Corolla

Cyl 1 -150psi
cyl 2 -150psi
cyl 3 -150psi
cyl 4 - 85psi
what does this mean and is this is what makes the car idle rough. What can I do about it and how long will my car last? Is there a short fix? Cheers

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Wednesday, April 4th, 2012 AT 10:10 PM

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  • Tiny
  • rasmataz
  • Member

Your problem here could be valves/rings to actually find out, get a cylinder leakage test-

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Wednesday, April 4th, 2012 AT 10:18 PM
  • Tiny
  • Angieee
  • Member

Cylinder leakage test revealed there is 85psi in cyl 4

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Wednesday, April 4th, 2012 AT 10:51 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,044 posts

That is not a "leakdown" test. That was a compression test. A leakdown test will give you a better idea where the pressure went.

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Thursday, April 5th, 2012 AT 12:03 AM

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