2005 J115PLSOR intake overpressure/raw gas?

[Harkonnen]

OK... saga continues. New powerhead, redone carbs. Engine sneezes at idle, crossflow line come off fittings (at green arrow, view from starboard), and a spray of fuel comes out of the line.

Can't think of anything other than excessive intake pressure, and don't see any way for that to happen other than reeds going bad (looked OK on disassembly). Thoughts?

 

[dingbat]

OK... saga continues. New powerhead, redone carbs. Engine sneezes at idle, crossflow line come off fittings (at green arrow, view from starboard), and a spray of fuel comes out of the line.

Can't think of anything other than excessive intake pressure, and don't see any way for that to happen other than reeds going bad (looked OK on disassembly). Thoughts?

Primer solenoid open / leaking?

 

[Harkonnen]

Primer solenoid open / leaking?

Didn't think of that, will check next, thanks. It does click as it is supposed, though, and I don't see how it would create overpressure, though.

 

[racerone]

Crankcase pressure is not that high.----And a bad reed valve would mean LOWER crankcase pressure

 

[Harkonnen]

Crankcase pressure is not that high.----And a bad reed valve would mean LOWER crankcase pressure

Except that I am talking about pressure NOT in crankcase, but in the intake tract between throttle plate and reeds. Which should be atmospheric or less, because of the sucking action of the case. And if it is ABOVE atmospheric, as stuff spitting out of the tube suggests, where, in your opinion, that overpressure comes from?

Here's a picture - same line, port side, stuff spitting out with some force: