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Starting problem


SeKcGamer

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That little black gizmo is what they call the check valve, and it's not as simple as it looks. In one direction, it is supposed to pass vapor easily, and in the other direction, it is supposed to pass vapors as well, just not as easily.  Here's a couple snippets from the FSM showing the details:

Here's where it is on the car (Number 8):
checkvalve1.jpg

Here's where it is on the evap system schematic (number 17):
checkvalve3.jpg

And here's how you are supposed to test it. Note that they didn't include this little tidbit until the 78 version of the FSM. In the EC (Emissions Control) section:
checkvalve2.jpg

 

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49 minutes ago, Captain Obvious said:

That little black gizmo is what they call the check valve, and it's not as simple as it looks. In one direction, it is supposed to pass vapor easily, and in the other direction, it is supposed to pass vapors as well, just not as easily.  Here's a couple snippets from the FSM showing the details:

Here's where it is on the car (Number 8):
checkvalve1.jpg

Here's where it is on the evap system schematic (number 17):
checkvalve3.jpg

And here's how you are supposed to test it. Note that they didn't include this little tidbit until the 78 version of the FSM. In the EC (Emissions Control) section:
checkvalve2.jpg

 

more confused than ever on exactly how that is supposed to work so its a two way check valve? I wonder why they want air to flow back into the tank? did the 78 have a sealed gas cap maybe? oh wait is says there is a vacuum relief valve right on the gas cap description. ugh.

Edited by Dave WM
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