? Easiest way to test Compression Release Valve for leak

[etbrown4]

There must be 2-3 good ways to test one. Curious what others do.

My approach is to adapt a regular air line and connect it to the male threads of the valve. I then put 100 psi of air pressure on the air line and you should know instantly if you have a leak.

 

[MerchBanger]

Pressurize the cylinder with the compression release still installed. Spray a little soapy water on the CR and there's your answer. You'll then also know if the rest of your saw is in good shape, leaks-wise.

 

[Streblerm]

throw it in a bucket of water?

 

[leeha]

A leaking decomp valve will make a mess around
the valve when the saw is running.
No mess, no leak.




Lee

 

[greendohn]

can you pressurize the cylinder with a leak down tester ? then spray CR with soapy h2o,,or plug your compression tester into it, pull the engine over a few times and spray with soapy h20 ?

 

[Whiskers]

Is the saw in running condition? If so, couldn't a guy just run the saw an spray a bit of soapy water on the compression release valve. Should be pretty obvious from there.

 

[mtngun]

If it is leaking, that will show up during a normal leakdown test. Most of them do leak slightly so I always swap the decomp for a plug for leak testing.