Got a problem. I have dual 44 IDFs on a 2367 type four, large valve heads and merged header. Recently I suddenly had a fuel leak. Not evident with the engine running. Overnight the top of the engine was wet (actually small puddles) and a bit of gas on the garage floor. Traced the leak to the carb barrel on number four cylinder. No obvious source. Removed carb. Had local Weber guru go through it. He found nothing wrong other than float level a bit high. Basically a new carb. Yesterday I reinstalled the carb, synched the carbs and everything drove fine. Until this morning. Puddle on garage floor and puddle on top of cylinder head again. Traced the source back to carb barrel for number four cylinder again. Now I see evidence of the carb being wet above the carb base gasket. It seems to have accumulated on the surface where the carb hold down nuts mount carb to manifold. How the heck did it get there? All the adjustment screws, so well hidden on the backside of the carb, seem to be dry. Can that much gas get out of the throttle shaft? And why does it only happen overnight? What is the source of pressure to drive the gas out if the engine is off? I'm baffeld, (and just a bit Pi_ _ed off). Help?
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