Suzuki 2 Strokes

You have a gt550 hydro, meaning a watercooled one? You build it yourself?

The 2 stroke virus bit me in my teens, never went away. Great machines, specially whem you have more of them to play with

Sorry sometimes spell check doesn't like words like hydrolock
Hydrolock is when you get to much fluid in cylinder and it wont allow the piston to compress, it can be very damaging to an engine.
I removed the drain bolts from crankcase and it had lots of 2 stroke oil in cylinders. I need to address the check valves in the oil lines.

Ah yes, could cost you a crankshaft, a rod and even the casing.
But the oilpump shouldn't allow oil to run true without running, and the oillines have valves blokking oil from flowing back to pomp.

oilpomp failure?

The pump really doesn't stop the flow, the check valve in the oil lines stop the flow to the cylinders, the vacuum from the cylinder or pressure from pump (not sure which)is what opens the valve.

Hmz.. strange.. oilpump regulates the amount of oil, f the engine is not running there is no oil. Is it stuck in full throttle position? Then it gives way to much oil. I know the sartup procedure after rebuild or empty oillines is start the bike, let it idle and manually put the oilpump in full throttle position until all lines are full. Then you drain the oil via the bolts you also mentioned.



Curious to know what the problem is/was

Paulini wrote:oilpump regulates the amount of oil, f the engine is not running there is no oil

The oil pump pressure is what opens the check valves, that is how it regulates the oil,the upper cylinder oil amount is regulated by the piston stroke in the pump,controlled by throttle,lower lines feeding bearings at constant amount.
When setting, gravity will flow oil through the pump and through leaking check valves and into crankcase. That is why you fill the lines with oil and hang with banjo down to test, if the oil drains out you have leaking valves.

Lesson learned, thnx