How to Test Valve springs

January 19, 2010, 12:24:05 PM

How Valve springs are checked

I had to check the valve springs for a 4G63T

This is a simple process. But a specialized piece of equipment is needed.

I use a Rimac spring tester with a 300lbs scale.

The first thing to do is set the stop to the correct height.
The spec used is 66lbs @ 1.575
I find that a venier caliper is more accurate than the built in scale.

Place the spring to be tested in the spring tester

Compress the spring to the pre set height and read the pressure.

It is a quick and simple way to have your valve springs checked to make sure they are in good serviceable shape.

Low spring tensions can lead to a lazy rev of your engine and also valve float.