How do you use a feeler gauge?

How do you use a feeler gauge?

1. Step 1 – Unfold Feeler Gauge Blades.
2. Step 2 – Select Leaf.
3. Step 3 – Fold Away Other Leaves.
4. Step 4 – Insert Feeler Gauge in to the Gap.
5. Step 5 – Be Gentle.
6. Step 6 – Feel for Frictional Resistance.
7. Step 7 – Check Gauge for Measurement.

How do I know if my valves are lash?

To determine the valve lash, subtract the squish from the desired valve opening lift. The cam in the graph is for a flathead, using squish of 0.002″ the valve lash should be 0.0127″ or 0.013″. The exhaust could be set a couple thousandths larger to allow for thermal expansion.

Should the feeler gauge have resistance?

Thanks for any help. When the lash is correct, pulling the proper size feeler gauge thru the clearance should have a resistance similar to pulling Scotch tape off a roll.

What tool do you use to measure valve clearance?

A critical tool to measuring valve clearance is a set of feeler gauges. Since the engine is going to be partially opened up and exposed, it is best to work on a clean machine.

Does valve Clearance get tighter when hot?

The extreme temperature of the exhaust valve stem will make that part of the stem expand more than the aluminum head for sure. The exhaust valve clearance will run tighter when the engine is hot.

What will adjusting my valves do?

What is a valve adjustment? The valve mechanism (push rod, lifter, and rocker arm assembly) is adjusted so that the lash has the proper clearance necessary to regulate the opening and closing of the valve. If the lash clearance is too great, it will affect the engine’s airflow and will eventually lead to valve damage.

Should valve lash be set hot or cold?

For an engine with cast-iron heads and steel valves, you can expect the lash to tighten up a couple of thousandths of an inch as it heats up-so for the cold lash you would set the valve lash a couple thousandths larger than the cam manufacturer’s recommended hot lash setting.

What is a feeler gauge used for?

A feeler gauge is one of the measuring and layout tools used for measuring the clearance between two parts. It consists of several small lengths of steel of different thicknesses with measurements marked on each piece.

How to use a gauge correctly?

4. Proper holding of the gauge – The user should hold the gauge in the same manner as you hold the pen knife or multi-tool between your thumb and forefinger. You can measure the gap by adding more than one leaf at a time for extra accuracy.

What is a leaf gauge tool used for?

This tool consists of various folding leaves of metal, all connected at one centre point. They are not used for tightening the fittings.The most common application of this type of gauge is in motor vehicle repair and maintenance, and specific purposes like checking valve clearance or piston ring gaps.