94 Superjet. Weird Throttle Problem...

Ragecage

Ragecage

Location
New York
Just when I thought I stabilized the issues with this ski... Here's the problem:

Just took it out this afternoon for a quick ride (it's nice around here now that school started -no boats and all the moorings make for a great buoy course), Anyway I was flushing it out when the engine just started revving higher and higher without mt touching it. Finally it hit what sounded like full throttle so I quickly turned the water off then pressed the red stop. Nothing but still revving. WTF? So I pull the lanyard off. STILL REVVING! Holy crap I'm going to burn this engine up! So I run and turn hose back on then run over and turn fuel knob to off. Finally turns off. Whew! I started it again to purge the excess hose water out and it did same thing. Fuel knob turned it off again. WTF is going on? Throttle cable looks good but most concerned about the auto shutoff not working. Suggestions? Thx in advance.
 
Ragecage

Ragecage

Location
New York
Nope. Haven't touched that part of the ski. Picked it up used a few weeks ago and other than a dripping Midshaft seal, the thing has been pretty solid. Been using it quite a bit and learning the "nuances" of a 23 year old ski that was never mine. Stupid things like the choke has been turned into a direct primer but that it no longer primes the reserve line so if you don't turn to reserve before the main runs out and engine shuts off, you can't start it without adding gas. Anyway its been pretty tight except for the seal leak...
 
khaos

khaos

Party in a can!
Site Supporter
Location
Tidewater, VA
Agreed with an air leak. The fact that it ran after the lanyard was pulled is troubling. If it ran but like poop knocking and smoking like hell after the lanyard was pulled you could have a run on. Where a deposit stays on fire in the cylinder and keeps the engine running. If it ran OK other than revving out of control I would look at the lanyard switch.
 
You must log in or register to reply here.
Top Bottom