Whistling sound after intake reassembly

[MCIntimidator]

So my Y pipe (coolant return) hose busted below the manifold. After removing those two hoses attached to the heads and replacing them with a T elbow (note pics). I went ahead and replaced the PCV line to surge tank. I also replaced the 2 lines that run from valve covers to the t elbow and then over to the intake (broke when I removed the clamps) When I put it back together I discovered my surge tank has 2 gaskets. One below the insert tubes of the surge tank, and one attached to the top of the tubes inside the surge tank.

I have a whistling sound coming from the surge tank or upper lower intake manifold gaskets that I had no choice but to put back in. The idle is also going up and down and dropping quicker than going up. The whistle sound increases and decreases right along with the idle issue. No Check Engine Light and I would appreciate some insight. These crush gaskets say to use once but I am in a position at the moment and have to use Red RTV. Should there be 2 gaskets at the surge tank, and is it okay to use a small fine bead on those gaskets? Upper lower gaskets (2) and upper gaskets (2 but I believe there should be 1). See attached pics of hose replacement and this suspect extra gasket.

I have run the car since reassembly. I burped the cooling system which for the record is not leaking now and the T elbow is working until my y's show up in 14 to 21 days. I now however have the air leak and am pulling my hair on the 2 gaskets at surge tank. Any help is appreciated greatly as I know the experience is huge in this SHO community.

 

[MCIntimidator]

So my Y pipe (coolant return) hose busted below the manifold. After removing those two hoses attached to the heads and replacing them with a T elbow (note pics). I went ahead and replaced the PCV line to surge tank. I also replaced the 2 lines that run from valve covers to the t elbow and then over to the intake (broke when I removed the clamps) When I put it back together I discovered my surge tank has 2 gaskets. One below the insert tubes of the surge tank, and one attached to the top of the tubes inside the surge tank.

I have a whistling sound coming from the surge tank or upper lower intake manifold gaskets that I had no choice but to put back in. The idle is also going up and down and dropping quicker than going up. The whistle sound increases and decreases right along with the idle issue. No Check Engine Light and I would appreciate some insight. These crush gaskets say to use once but I am in a position at the moment and have to use Red RTV. Should there be 2 gaskets at the surge tank, and is it okay to use a small fine bead on those gaskets? Upper lower gaskets (2) and upper gaskets (2 but I believe there should be 1). See attached pics of hose replacement and this suspect extra gasket.

I have run the car since reassembly. I burped the cooling system which for the record is not leaking now and the T elbow is working until my y's show up in 14 to 21 days. I now however have the air leak and am pulling my hair on the 2 gaskets at surge tank. Any help is appreciated greatly as I know the experience is huge in this SHO community.

Also cleaned my injectors while I was in there in case anyone wondered. Want to replace them, but my current position prevents it. Now after all this she's sitting cause I won't drive it knowing it's got the air leak. I am learning quickly why everyone loves and hates these beasts...

 

[MCIntimidator]

Also cleaned my injectors while I was in there in case anyone wondered. Want to replace them, but my current position prevents it. Now after all this she's sitting cause I won't drive it knowing it's got the air leak. I am learning quickly why everyone loves and hates these beasts...

It was reassembled with one gasket on the upper manifold as well. Removed the one below the surge tank bezel tubes and noticed this air whistle.

 

[gamefanatic]

Well what you described is an unmetered air leak problem, as you have surmised. I personally have never had a problem reusing the intake gaskets. I'd recommend getting a can of Carb Cleaner and spray around your intake meets another part, or your vacuum hoses like the PCV. If the engine reacts you have found a leak. There could be multiple so don't stop at just one.

 

[MCIntimidator]

Well what you described is an unmetered air leak problem, as you have surmised. I personally have never had a problem reusing the intake gaskets. I'd recommend getting a can of Carb Cleaner and spray around your intake meets another part, or your vacuum hoses like the PCV. If the engine reacts you have found a leak. There could be multiple so don't stop at just one.

And what of the 2 gaskets at the surge tank? Ford of course doesn't have an exploded view of the intake setup. I will try spraying the carb cleaner as suggested. It's definitely acting like an air leak. Do you recall yours having the same 2 gaskets at the surge tank? Note pic.

Thank you for responding.

 

[MCIntimidator]

Well what you described is an unmetered air leak problem, as you have surmised. I personally have never had a problem reusing the intake gaskets. I'd recommend getting a can of Carb Cleaner and spray around your intake meets another part, or your vacuum hoses like the PCV. If the engine reacts you have found a leak. There could be multiple so don't stop at just one.

You and @GEN 3 SHO FAN have reused them which makes me way more confident. They looked in good condition. I left one of the gaskets out yesterday during reassembly that mates the surge tank and insert tubes. I only put back the one mating the insert tubes to the top 8 manifold pipes. If I have that right? 8 upper manifold tubes are the upper manifold connected to surge, and the upper lower are the bottom 8 tubes that connect to the lower intake manifold. All gaskets from upper lower down went back in. Today I put back the one in the previous reply that I left out like a twit...

 

[MCIntimidator]

Well what you described is an unmetered air leak problem, as you have surmised. I personally have never had a problem reusing the intake gaskets. I'd recommend getting a can of Carb Cleaner and spray around your intake meets another part, or your vacuum hoses like the PCV. If the engine reacts you have found a leak. There could be multiple so don't stop at just one.

@gen3shofan

Well what you described is an unmetered air leak problem, as you have surmised. I personally have never had a problem reusing the intake gaskets. I'd recommend getting a can of Carb Cleaner and spray around your intake meets another part, or your vacuum hoses like the PCV. If the engine reacts you have found a leak. There could be multiple so don't stop at just one.

Apologies, @GEN 3 SHO FAN cleared up my question as to the 2 upper surge tank gaskets. Now to go figure out if it's still leaking. Will report tomorrow what happened. Thank you as well @gamefanatic. Didn't even think about carb cleaner tests and have used them. Forget how this thing in my head sometimes doesn't function...