28 September 2018

Remove And Replace

The new exhaust control solenoid arrived today.

Not much to look at is it?

Except for being dirty, you'd never be able to tell it'd failed.

The solenoid operates a normally open valve.  When there's no power to the solenoid, the valve opens and lets the vacuum "escape".  When it's energized, it pops the valve closed and allows engine vacuum to pull the exhaust butterflies closed.  It's about as simple as you can make an electro-mechanical device.

A solenoid is as simple as you can make such a thing, and they fail.  Lord knows how many started solenoids I've had to replace over the years.

Working through the holes where the taillights resided...

I swear it would hurt less if it was bleeding.

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