I was cleaning my engine bay of my newish 87 RX7 and I removed the intake from the TB and a nipple on the delay valve that sits under it snapped off and now my car doesn't start!

1. Does anyone know where I can get another one?
2. Is all of the engine tubing 5/32"? (I need to order silicon tubing)
3. Can I just run tube (w/o the delay valve) from the double throttle diaphragm to wherever it goes?!

(It's the green thing under the TB in this photo I found, though mine is broken)

 

Answers: 1. http://www.mazdatrix.com/b-egr.htm

2. Vacuum hoses are 5/32 except for the vacuum spider( hose which connects to top of throttle body is larger). You could get the 5/32 hose at an auto store and it works just fine and is very cheap. Silicone really isn't necessary. Regular rubber hose will last longer than you will own the car.

3. Is it a delay valve or one way valve?

There is a trick to removing the hose off the emissions solenoids. If you need help just ask.

EDIT: Why is your hose missing off the boost sensor?

 

Sorry, that picture is for illustrative purposes only, I have an NA. The valve shows an arrow pointing toward the firewall.

 

Most will tell you the double throttle doesn't work after all these years and cap it off. So try capping it off and your car should start. Just put a screw tightly into either end of the tube after you remove the valve.

 

Done and I have another air leak somewhere. Did I mention I HATE old rubber tubing I'll work on it first light and see where it's coming from.

Thanks!