Nytro compression

[theyamman]

Since the Leak down tester I bought doesn't work I had to use a simple compression tester.

I have a head shim in my Nytro and it tested at 125psi across all three cylinders does this sound right??

Thanks, Wayne

 

[theyamman]

The test was done on a cold engine without holding the throttle wide open.

 

[rxrider]

As long as Your Readings are uniform across all cylinders you're ok.

From how you did Your test you will get pretty low Readings.

Procedure is:
Warm up the engine to normal operating temps.
Disconnect fuel.
Hold the throttle wide open.
Run the compression test.

Values should be within 15% higest to lowest Reading.

 

[theyamman]

Thanks for the reply rxrider

I would usually do it the way you described but I have the sled stripped that's why I bought a leak down tester but since that didn't work I had to improvise.

Thanks, Wayne