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Correct. This is a frame from a video with engine running. The line is the same line shown in the first pic, only the other side, and it was blown off its fitting. Based on what I am hearing at the local shop, it is supposed to recirculate excess gas from the crankcase back to intake. So, if...

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...

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.

Mixing gas is a pain, but at least you won't get your engine fried if VRO freaks out. My philosophy is, run VRO while the motor is under warranty, then go pre-mix. There are reasonably priced kits for that.

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...

Fingers crossed, I got it. Installed aftermarket non-VRO pump; idles OK now, pulse hose dry, smoke is down to acceptable levels. Thanks y'all for your wisdom.

You wouldn't have had spark if kill switch were a problem. Did it suddenly happen, or was it sitting a while? How's compression? Try spraying starting fluid down carb throats and giving it a crank.

*Sigh* Yes.

Those are Torx. Six points solid. I am looking for 5 points (I believe Apple calls them "pentalobe") with a center pin. Found them on Amazon, but they might not fit through adjustment hole. I'd go with aftermarket: https://maxrules.com/VRO_04-90.php

I know. I just can't seem to find five-pointed torx-like bits. I'm sure they exist.

You're right, it's Torx. They do have that five-point for idle adjustment, though.

Where do I buy bits for 5-point star with center pin security screws? :) I'll probably mess with it later anyways. for education and out of curiosity.

There is a weird connection to vapor separator tank, so any pump simply won't fit. There is a couple of outfits that make the bracket to put on a non-VRO pump, though. Good news, the bracket plus pump runs about the same as VRO rebuild kit.

It is a VRO, but oil injection was removed long ago; I am running pre-mix. I was thinking about getting an aftermarket non-VRO rig; what's the wisdom on that? Thanks!

Iiiiiiiiiiinteresting... As I said earlier, if I pressurize the system with a primer bulb, no obvious leaks. If I then give just a tad of suction to the pulse hose connection at the pump, gas comes out - not a lot, 2-3 cc's at the most. Does it look like a leaky pump? Thanks!

That's what I am wondering about, because it smokes too much even for a two-stroke (smoked A LOT more before carbs redone), lots of smoke on startup, and when you close the throttle, a big puff comes out. Pump checks out OK per manual, but there is always some gas in the pulse hose; that doesn't...

Did it as a part of restoring factory settings - took them out and blew the screw hole (and the orifice) with carb cleaner.

So I assumed wrong. Somebody did mess with idle screws: not only they were off, but all carbs were different. Returned to factory settings, major improvement. We'll see how it behaves on the water. Thanks!

Yep, next step. Thanks!