91 xj 4.0l

[WillCherokee]

My Cherokee won't start but while I was attempting to start it, it literally blew my oil dipstick 10 feet away....YES....10 feet away. Was wondering why did that happen? What causes that to happen?

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[WillCherokee]

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[4.3LXJ]

Sounds like the vents in the valve cover are plugged. Those little plastic elbows get plugged up and the engine develops pressure in the crank case