Howdy folks.
I got myself some actual pressure gauges with dampers installed in them, and set them all up. They look nice. I can get the gauges synched - but once I have them all synched, I can't get the idle to drop down to where it should be.
Valves adjusted, carbs rebuilt (all new o-rings, cleaned thoroughly), new carb boots, new plug wires.
I'm pulling about 10psi vacuum on the center two, and as I understand it should be pulling slightly more on the outsides - meaning the outside two butterflies are more closed than the inside two.
Right now, It's hovering at 10psi inside, and about 12 outside. However, I keep backing out the idle screw and the idle doesn't drop.
Closing a butterfly on one of the outside carbs beyond a certain point actually raises the engine rpm.
I've also played with the highest idle mixture screws, and I think I have that dialed in. But this is a bit fiddly, and I am not so good with fiddly things.
Maybe I should do a compression check before I try to synch the carbs.
Thoughts?
I got myself some actual pressure gauges with dampers installed in them, and set them all up. They look nice. I can get the gauges synched - but once I have them all synched, I can't get the idle to drop down to where it should be.
Valves adjusted, carbs rebuilt (all new o-rings, cleaned thoroughly), new carb boots, new plug wires.
I'm pulling about 10psi vacuum on the center two, and as I understand it should be pulling slightly more on the outsides - meaning the outside two butterflies are more closed than the inside two.
Right now, It's hovering at 10psi inside, and about 12 outside. However, I keep backing out the idle screw and the idle doesn't drop.
Closing a butterfly on one of the outside carbs beyond a certain point actually raises the engine rpm.
I've also played with the highest idle mixture screws, and I think I have that dialed in. But this is a bit fiddly, and I am not so good with fiddly things.
Maybe I should do a compression check before I try to synch the carbs.
Thoughts?
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