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Unread 10-14-2009, 09:52 AM   #16
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Posts: 6,336
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.

Originally Posted by Motorcharge View Post
So do you actually hear your thoughts in your head or is it just sort of a dull roar before you smash your face into your keyboard and just submit whatever dumb **** ended up on the page?
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Unread 10-14-2009, 10:01 AM   #17
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1991 XJ Cherokee 
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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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