Noise from intake/ fuel injectors

[Broncofied]

Hello everyone, I am new here. I have always wanted a Bronco to tinker with, and now that I have one I find myself asking "Why "? Just kidding. I just had a new motor installed in my 93 bronco(5.0), and everything runs great. The only problem I am having is dreadful noise coming from what sounds like between my intake and firewall where the fuel line comes in. There is no hesitation while I am driving, it almost sounds like a carburetor that doesn't have an air filter on it. With that being said, if I really step on the gas pedal, the sound disappears, but as soon as I let off the gas it returns immediately. I have also noticed that when I shut it off an almost like gurgling sound. Does anyone have any ideas ?

 

[Rons beast]

Welcome to the Zone.

Since you had the engine changed, there may be air trapped in the heater core. I believe it does sit higher than the top of the rad. I had the gurgling sound too after replacing the radiator. I parked the Beast on a steep driveway to get the rad higer than the heater core and let it idle for about 10 min. with the heater on high.

That cured that problem.

There also could be a leak in the AIR system. The plumbing runs at the rear of the block. Get a mechanics mirror, and a step ladder to help you climb in.

Good Luck

 

[Broncofied]

Welcome to the Zone.

Since you had the engine changed, there may be air trapped in the heater core. I believe it does sit higher than the top of the rad. I had the gurgling sound too after replacing the radiator. I parked the Beast on a steep driveway to get the rad higer than the heater core and let it idle for about 10 min. with the heater on high.

That cured that problem.

There also could be a leak in the AIR system. The plumbing runs at the rear of the block. Get a mechanics mirror, and a step ladder to help you climb in.

Good Luck

Thanks for the tip, I will definitely give that a try. Also, does anyone know what the 2 parts are called that are located prior to the fuel injectors. They look like some kind of regulator, the fuel line ties into the bottom with a red vacuum line attaching to the top.

 

[Rons beast]

The part you are describing should be the fuel preasure regulator. It is operated by vaccuum.