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Information about how to tune up a Jeep Wrangler YJ with video links.

A compression test is one of the quickest and most valuable diagnostic tests you can perform on any engine to determine its overall condition. It can test for bad piston rings or worn cylinder walls. It can also determine if further testing is needed for valves or the head gasket.

Leaf springs and the shackles are a simplistic type of suspension. But there are a few things that you need to know to make them perform as well as possible. This article and the accompanying video will give you the awesome information you need.

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