So I got that dual-temp gauge from a company I won't provide with a free advertizement. Put the sensors into water pressure ports. Works acceptably well showing cooling water temps.
Apparently, the motor (j115plsor) has a blind hole in each head that also looks like 1/8 NPT. I wonder if that's...
Probably not, the block is clean all the way down. The seal and driveshaft are right there, and there seems to be just enough of an opening for the spinning shaft to sling gunk around.
Fair enough, I was keeping it under 3K per break-in instructions. I do suspect I have excessive crankcase pressure issues, because recirc hose kept popping off
By way of an update, replaced reeds with Boyesens (and also replaced primer gasket). That cured most of the problems described here. Smoke is down to acceptable levels.
It does feel like half-evaporated 2-stroke mix. Except that it almost looks like it's coming out of the bottom of the crank - everything above the exhaust housing spacer is nice and dry. Combined with the fact that I see more oil/fuel in exhaust than I am comfortable with, I wonder if fuel pools...
It's just that, one, there is nowhere for the stuff to come from but the crankcase (and if it does, why it is pooling in there?), and two, I can't see where it's coming from - between the powerhead and midsection?
Where is that stuff possibly coming from? Fuel system is tight all the way up to carbs, floats set right (I think - manual calls for 1 1/16...1 1/8in or 17... 28 mm (sic) drop). Does not look like fresh fuel anyway; more like 2-stroke like mix that's been sitting for a while. Thoughts?
Thank y'all!
Stupid saga continues. Looks like someone has been messing with reeds, because one of the shims is missing. I wonder if they have already been flipped, because the tip seems to lie flat against the reed block, but the mid-section shows a gap.
I am at the end of my rope, because this is the only thing in intake I did not mess with (OK, primer, but that should not blow the connector lines off) - and I am pretty confident in the carbs.
Pulled the reed blocks. Reeds look OK (no obvious wear), but if I shine a light down intake, there are visible gaps - not very consistent petal to petal. Thoughts? Thanks!
So I was misinformed on that; fuel IS supposed to flow aft (so that bearings stay lubed even if one of the carbs runs lean, I imagine?), and check valves are operational. But what could possibly cause overpressure that blew the lines off?
You might be right. Gentle suction on priming line (solenoid not energized) gave me a squirt of gas, but only on one cylinder bank.
How do I properly check for that?
