My 2002 jeep liberty oil filter is leaking ijust had a new engine put in and im wondering if its missing part or piece of rubber that the rest against could you help me?

A leaking oil filter on a newly installed engine in your 2002 Jeep Liberty is a serious issue that needs immediate attention. It's unlikely to be simply a missing rubber part; that would be a significant manufacturing defect in the filter itself. Here are the more likely culprits:

* Incorrect Filter Installation: The most probable cause is improper installation of the oil filter. The filter needs to be tightened to the manufacturer's specified torque. Over-tightening can crush the gasket, causing a leak. Under-tightening will allow oil to bypass the seal. A filter wrench is crucial for proper tightening – avoid using excessive force with your hands.

* Damaged Filter Gasket: Even with proper installation, the filter gasket itself might be damaged. This could be due to a manufacturing defect, or it could have been damaged during installation if too much force was applied. Inspect the gasket carefully for any tears or irregularities.

* Damaged Filter Mounting Surface: The engine block's oil filter mounting surface may be damaged, preventing a proper seal. Check this area for any imperfections, debris, or damage to the threads.

* Wrong Oil Filter: Make absolutely sure you used the correct oil filter for your Jeep Liberty's engine. Using the wrong filter can lead to leaks. Double-check the part number against your owner's manual or a reliable parts catalog.

* Loose or Damaged Filter Adapter (less likely): Some vehicles have an adapter between the engine and the oil filter. While less common, this adapter could be loose, damaged, or incorrectly installed.

What you should do:

1. Stop driving the vehicle immediately. Driving with an oil leak can cause serious engine damage.

2. Carefully inspect the oil filter and its mounting surface. Look for any damage to the gasket, the filter itself, or the engine block.

3. Tighten the oil filter (if it's loose), using a filter wrench and the correct torque specification. Consult your owner's manual or a reliable online resource for the correct torque. Don't overtighten!

4. If the leak persists after checking the filter and tightening it properly: Take your Jeep to a qualified mechanic. They can diagnose the problem properly and repair it safely. It's crucial to address this quickly to prevent further engine damage.

Ignoring this leak could lead to significant engine damage and costly repairs. Don't delay getting it checked by a professional.