My 94 suzuki gsxr750 has a valve that I found broke off when I took the motor apart. I tried to see if I could remove valves and wasn't successful. I noticed all my valves would move but one is there anyway to remove the valves?

Vacuum leak, idle air control motor and solenoid, stuck throttle cable if equipped, throttle position sensor

If you took "Pump" apart, you wouldn't have found broken laterals. You will need to open up the "Filter" to find laterals. If sand is ending up in the pool, you either have a broken component within the filter or you have an overfilled filter tank and during backwash sand is lifted up into the valve, and upon returning valve position back to "Filter" the residual is blown back to pool via the return inlet. If this is the case that is why always follow label / owners manual directions as to Quantity of media to add. More is not necessarily always better!

Overdrive would not engage at 35+ mph. Took trans pan off, removed filter, dropped valve body out. Found broken snap ring on overdrive servo. Removed and replaced snap ring. Opened valve body and found 1 of the broken pieces stuck in a valve. Replaced all valve body gaskets. Put valve body back in with 95 in/lbs torque. Put in new filter. Pan on with 120 in/lbs or 10 ft/lbs. Refill with trans fluid. Run through gears. Lower vehicle. Test drive.

Most VW are interferance motors. That would mean the pistons could have hit some valves. I would stay away.
Also have you seen the motor? I may be off but I thought the VR6's had a chain. Even if, its still an interfernce motor.

The problem is the valve is stuck and the little motor inside can't move the wheels to open or close the valve. This happens a lot. I have had two timers, and the same thing happened to both. Unless you are mechanically inclined and can figure how to take it apart, there's nothing you can do. I got inside and rotated the valve and hopefully it will work for a while before I have to do it again. If you want details on how to take it apart, let me know and I'll give you a few tips.

I have stuck a connection to the Bissell ProHeat series cover extractor fix guide underneath. This guide resembles my Book of scriptures while I'm dealing with these machines, and is Very useful on making sense of how, and where hoses and parts go, and potential clarifications of issues, and how to fix them.
Check this out: https://www.olansgz.com/

Similar problem still looking for a solution...
I observe that if I press down firmly on the clean tank while pulling the trigger, that it dispenses the correct volume of solution, but that's an awkward action to do while also doing the wet runs back and forth.

run a compression test,it may be an interference engine when the belt breaks it also bends engine valves

Very rare that a chain breaks. I'd replace the chain and before closing it up, turn the engine by hand and see if anything is binding or frozen in the valvetrain. Also look carefully at the valve springs to make sure that no valves have bent. (if bent, most times the spring will not return to normal height)

the start windings are probly burnt. does it hum when it his cut in. i had one the same. u bleed it down to nothing and it would start but slow. once its up to speed the motor switch snaps and u go to the other set of wires in the motor. it will work good till it cuts out. like u said no back pressure at the head. but wont anyway. well if u try to start it its not long and the short pipe to the check valve builds up if u start from empty the check valve can open and let the air out while it slowly speeds up if this sounds like ur problem then u need a new motor i had one i took apart and the start windings, the thinker shorter ones, were stuck together because the clear insulation melted together. i spit them apart using a screwdriver and gooped them up with that liquid black tape. put it together and nothing. found out i broke one. so i twisted it together good and put it all together again and pluged it in. it still works today. it was just a temp fix but i figure untill it stops working again im not going to replace it.