Noise From The Inlet Fuel Line
Hello all. I am new here and hoping someone may have some ideas to help my issue.
I have an older Go Street 30003 unit on my truck that I just spent the last 4 years restoring. I have not driven the truck yet, still finishing things and working out bugs.
Its a new Ford 302 roller motor, E303 cam, aluminum heads. NOTE: I did buy the fitech used from a friend.
My throttle body has developed a noise that is echoing into the 6AN fuel line. I did not notice this noise when I first started the engine but I can't hear it unless i get in the truck and close the door.
My fuel line is flex line but hard attached to my firewall with aluminum an line clamps.
When the engine is at idle and I have the doors shut, I can hear it in the truck.
I feel I have confirmed 100% that it’s at the inlet fuel line only.
If I take a long extension and put to my ear and start probing around the engine, I get the noise very clear when I touch a metal "an" fitting and only at the inlet.
I thought it was my throw out bearing when I first head the noise inside the cab.
At the rear of the truck there is no noise. Fuel pump is a FiTech inline.
In the handheld the fuel pump settings are 12 volts with PWM now set to 100. It was at 74.6. Nothing has changed the noise.
I also have a hesitation off throttle tip cold or hot.
I ordered a fuel line pulse damper but not sure it will help being the fuel pressure seems constant and not jumping. Any ideas? Thoughts?