Step 5
A normal indication will be a
flat line with a little noise.
A trouble indication will show
as an obvious spectral peak.
• Exhaust valves are a leading cause of catastrophic engine failure.
• Insight’s unique Exhaust Valve Analysis process can forewarn you of a pending problem.
• Valves often degrade slowly, Insight’s EVA is the key to early detection that will give you plenty of time to react.
• While mathematically sophisticated and difficult to explain, it couldn’t be easier to use.
• All cylinders undergo analysis continuously with results shown on a single screen.
• You can check all cylinders in a glance or examine one at a time. A flat line is normal, a peak is not.
• It is that easy to use.
A good time to use this page is in cruise after you lean out the engine.
Leave this page up for 5 minutes, if everything looks like
Figure 1
you are good to go.
If you show large spikes like
Figure 2
use the SEL knob to dial to see which cylinder it is on.
When on ground you might want to take spark plug out and bore scope that cylinder to see what is going on.
Figure 1
Figure 2
Figure 1
Figure 2
Note: This feature is a must view for all pilots running lean of peak.
This is why Insight recommends a G3 or G4.
