Ok I am not an engine builder etc and know enough to be dangerous, but this one is beyond me by a mile.
Any help here would be appreciated.
So the rear 4 air intakes on my Weber’s when covered appear to pick up a little rpm and not stumble the engine as the front 4 did.
So I put about 30 seconds worth of regulated propane in the
oil fill spout to attempt to see if I had an intake gasket leak on the bottom of the intake as the top has yielded no indications of a leak on top with carb cleaner sprayed everywhere.
So the engine did not care at 30 seconds and there was no increase in rpms. Now here’s where it gets interesting.
I wondered if I was putting enough volume of propane in the cavity so I ran the hose over number 8 air intake and the rpms jumped right up. But the test yielded that the rear 4 numbers 7,8,3, and 4 all increased when the hose ran over them.
However numbers 1,2,5, and 6 all stumble and want to kill the engine when the hose is ran across them?
How Is it possible for 1/2 of the engine to want one thing and the other to want something else? The idle jet holders are all the same jets and air bleed hole size. I can tell you that even when I had my Demon carb on the engine the rear mix screws did not get the same response the front ones did.
On the Weber’s I can screw the mix screw all the way in on the rear 4 sets and it does not even stumble but the front 4 will almost kill the engine with the same adjustment.
Sorry but totally at a loss here and could use some advise.
Thanks
Kirk