why is my horn have a slight whistle too it?

Main Train Horns
1

hey i just installed my horns in yesterday they are the xls 540 conductors model and it sounds great but now it has a little bit of a whistle too it but not too bad yet but after i blow it a little while it goes away whats the problem i know theres no dirt or moisture in there i just put it on yesterday evening and its hot as hell down here so can anyone help me???

thanks

2

Welcome to the forum. Is it possible that one of the valves isn’t closing properly?

3

You may have a leak somewhere.

4

What pressure are you using? If it’s too high, the horn might be whistling until the pressure drops.