 |
Adventures Under the Hood |  |
|
Adventures Under the Hood | |
|
The CTO is a thermal vacuum valve and is located in
the side of the intake manifold just forward of the
carburetor. It blocks vacuum to the
EGR Valve and the
Evaporation Canister when the
engine is cold. It begins to open at a nominal 115° F.
|
|
| These drawings illustrate hose routing for the factory CTO. Note that one of the nipples is plugged. | 
|