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Unread 10-14-2009, 08:52 AM   #16
justanotherjpr
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Join Date: Nov 2007
Posts: 6,336
Quote:
Originally Posted by sterfry2004 View Post
Yeah, I figured I must have done something wrong. I'll clear it and try it again.



If one cylinder is running on 90, is that bad for the engine? If the repair will need to be done eventually, I might as well do it now, but if it's not a huge deal, I'm not opposed to just leaving it.
If you can afford it, do it. An engine needs 60psi minimum to run. It will barely lope along at that. You'll run a lot smoother with more power if you repair the issue. I was saying more or less that you could 'get by' if you needed to.

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Unread 10-14-2009, 09:01 AM   #17
Wiskey
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1991 XJ Cherokee 
 
Join Date: Oct 2009
Location: San Marcos CA
Posts: 487
Well,.. the main question in my mind is "Why is it at 90?" If it's low because your rings are worn there,.. no big. But usually they wear uniformly. If it's low because of a head gasket that got something under it, and is bleading compression into the coolant jacket that is a big problem and it can't run like that.

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