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1989 Other Mitsubishi Models compression

Tiny
TIMSMIGHTYMAX
  • MEMBER
  • 1989 MITSUBISHI
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 190,000 MILES
I got this pickup that is used for work.I am not getting compression out of the third valve. Is it safe to assume that I need to get the valve machined or what else could it be?
Thursday, December 27th, 2007 AT 3:30 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

An air pressure test will prove the valve problem. If your valves are adjustable, make sure that they have clearance when hot, if so one would presume a valve has burnt out. But the air pressure test will prove it.

Mark (mhpautos)
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Thursday, December 27th, 2007 AT 3:48 PM

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