I was adjusting my fuel pressure when I noticed what sounded like a vacuum leak in the area of the where the upper/lower intake meet and around the #1 cylinder.
Yes, the vacuum line that goes to the regulator was plugged!
I finished adjusting the fuel pressure and put the vacuum line back on and the sound went away.
So I pulled the line back off and plugged it and the sound came back. I started trying to locate it using a mechanics stethoscope but couldn't find it at any of the normal places you would look.
I placed the stethoscope against the metal fuel rails and heard the sound coming from there.
The sound is a hissing sound like a vacuum leak, but once I put the vacuum line back on the regulator, it goes away. Any idea whats causing it?
I thought bad regulator, but there is no vacuum sound coming from it, just the fuel rail, it holds steady normal fuel pressure and I observed no fuel coming out of it at idle.
Anyone know? Is it even something I should be concerned about?
Thanks
Yes, the vacuum line that goes to the regulator was plugged!
I finished adjusting the fuel pressure and put the vacuum line back on and the sound went away.
So I pulled the line back off and plugged it and the sound came back. I started trying to locate it using a mechanics stethoscope but couldn't find it at any of the normal places you would look.
I placed the stethoscope against the metal fuel rails and heard the sound coming from there.
The sound is a hissing sound like a vacuum leak, but once I put the vacuum line back on the regulator, it goes away. Any idea whats causing it?
I thought bad regulator, but there is no vacuum sound coming from it, just the fuel rail, it holds steady normal fuel pressure and I observed no fuel coming out of it at idle.
Anyone know? Is it even something I should be concerned about?
Thanks