sound sample uploaded.
first on the left side of engine then on the right side of engine, then from top of the engine compartment..
high pitched chirp alternating between left and right sides
I did some more listening to the engine.
#1)yes, it will run. #2)the sound (chirp, like vaccum or pressure) alternates between left/right of engine #3)the sound is eliminated from the **left** side of the engine when I remove the plugs from the **left** side
ok... sources of intake and exhaust from the sides of the engine:
1)balance tube for air. connects to "master" output on top of left side carb. connnects to top of left side manifold. connects to top of right side manifold#2)"balance" tube for brake booster. this is at the base of each manifold, they are connected by metal tube. brake booster connects to this tube.
#3)EGR tube. EGR isn't connected (crimped off before it goes to exhaust). This connects front(of car) of manifolds together, T to exhaust is crimped, but manifolds are connected... I didn't put new gaskets between the tube and the manifold,
#4)EGR ?valves? on manifolds. These are vacuum diaphragms on the outer side of each manifold. they have a small nipple on them that connects to a T and then to right side of plastic air box.
#5) bad seal between carb and manifold? (on both sides?)
#6)bad seal between manifold and head? (both sides?)
Exhaust: sounds like the sound is on top of the engine, not on the bottom.
#7)exhaust output, exhaust leak. two ports on bottom of each head. pretty sure it isn't this. New gaskets between heater boxes and head... I glued them to the head with formagasket because they kept falling out while trying to bolt up the heater box.
Any ideas? I think the sound may be tied to the manifolds and EGR valves on the manifolds.
Jenny