What is this in the PCV line?

Cougar Community Classic Cougar Maintenance Restoration and Repair
1

I am curious as to what this is in the PCV line. Is it a valve? Does it matter what position the lever is in?

Thanks,

S

Valve
Valve1536×2048 181 KB

2

What you are looking at is a bimetallic strip connected to a calibrated vacuum leak. It raises the idle speed when the engine reaches a certain temperature. It’s a good thing when it works.

3

The position does not matter but what does matter is whether or not it works properly. I would try applying boiling water and see if it opens.

1 Like
4

That is called a ‘hot idle compensator’.

5

Thanks. I’ll check it next time I get it heated up…