someone please help, my fd makes a boost leak noise accompanied by a noise kindof like when you blow air over the top of a pop bottle and then a strong smell of fuel, as well as i have found gas in the oil catch can, i have the catch can going from the lower connector of the oil filler, with the pcv deleted, anyone know of Anythingg

 

My guess is we're dealing with unrelated issues.
For the boost leak start checking hoses, couplers, connections and lines.
The fuel leak would concern me the most. It could be the Fuel Pulsation Damper (FPD). They're known to fail over time and it's led to more than one engine fire. The FPD is located under the intake manifold. A small bright flashlight and your nose might tell you more.
How much fuel did you find in the catch can? Fuel dilution of oil on these engines...over time, is common to some extent. But alot of fuel dilution is generally a sign of worn seals, bad tuning, dirty injectors or heavy/bad porting.

 

I have an Fc with an FD throttle body.
I heard a real weird noise like what you were describing and found it to be a Vacuum leak at the Throttle body.I made a gasket and it went away.
The Problems of having a Turbo system is it will act up when you have a boost or a Vacuum leak.
www.fighters-garage.com Sells a tester to find a boost leak,
You Put it on the Front of your Turbo(or Afm) and then using some pressurized air,pump some air into the system and Listen for leaks.
I bought one and it really saved the Money and the frustration of trying to fix the car.
Now,the gas in the catch can thing:Is the can hooked up to any Vacuum?
if it is I would suspect that you are Blowing gas into the can when you boost.(if it doesn't have a Check valve on it).
Is the catch can hooked it up to the vacuum system,or any part of the old Cannister system?

 

^misteryx69 - most of your experiences there don't apply to the FD - except for the check valve. The FD does have a metal check valve for the fuel return that does fail and can cause a fuel smell. Thankfully, it is a lot easier to check and replace than the FPD.

Sgtblue was on the money with his recommendations.

 

Is it possible the gas is leaking into my oil and evaporating into the catch can instead of blowing into it under boost, my oil smells of fuel and looks pretty runny when cold. If so is my injectors and or apex seals, and if that's the case what's a rebuild worth

 

I merely thought that a Vacuum or a boost leak would be something to check out regarding the Noise that the OP was getting( whistle).
I had the leak at the Throttle body elbow,and you know that Rubber Triangular shaped O ring seal is a pain in the ***.
Bur your Right Gracer,I am more of an FC oriented guy!
I can't afford a Darn FD..(not Unless I sell more FC parts..lol!)

 

it hasnt been tuned or ported that i know of, it only had 95k on it and everything is still stock and all the vacuum lines are pretty damn brittle, i ended up breaking check valves and the left duty solenoid, as expected, the problem came after i replaced some vacuum lines during winter, i took everything apart over and over and checked all my work and everything was fine, the smell of fuel comes only after i hit boost, if i drive under vacuum theres no noise and no smell, id guess out of the three times i emptied the can i got about a beer can full of oil fuel, potent enough that it lights up just like pure gas. the oil seems pretty runny for 10w40, if the injectors are leaking wouldnt that have to do with the apex seals letting the fuel pass?

 

^ Given your description, Check the metal check valve that is in front of the TB/UIM.

You can get a replacement from Ray Crowe at Malloy Mazda. He gives us discounts and knows the car inside and out. His number/email is in the 3rd gen FAQ

 

witch check valve, I got a couple plastic 1 q
Ways?