Fibonachu,
No change with temperature.
It’s annoyingly loud, whistle type noise that starts as soon as I turn the key on and prior to start. It then continues as long as the engine is running. My truck’s exhaust is pretty quiet and I can hear it in the cab while driving.
Fuel pressure is rock solid and engine performance is great.
I’m beginning to think I have some kind of vibration/harmonics happening in the steel fuel lines that run from the tank area and along the frame rail to the engine compartment. When feeling the steel pressure line it does have a slight pulse. I’m going to get under the truck today and see if I need to add some clamps to the lines and see if that helps.
I read somewhere (I think on the Holley Forum but can’t find it now) that having the in tank fuel pump internally regulated to 58 PSI and the Sniper unit itself internally regulated to 58 PSI can cause a noise as the two regulators are fighting each other. The fix is to remove the regulator from the in tank pump somehow. Have you heard of this?
Last edited by D B Cooper; 10/04/2022 10:51 AM.
