lavasioux
Member
Just brought home a 06 STX12F with 185 hours and a dead #3 cylinder. The other cylinders are 160, 170, 190.
Boroscope won't fit through the tiny plug hole, but got a view of piston top and it... was there, there is a top of the piston (at least within view of the spark plug hole)
Cam lobes looks pretty, no damage. Owner changed oil regularly.
It starts and runs. Other cylimders check good on compression.
Didn't hear anything clanking, like a valve bouncing on top piston, overall fires right up and sounds good.
It does die, but starts back up. Feels a whisker bad gas, injector clog maybe, and service paper mentioned bad gas (cause of original prob?)
Going to watch vids on engine removal and dig in accordingly.
Silly question- can it be run as is? As a 750 cc?
unplug #3 injector and send it?
I can't imagine doing a rebuild and not going all in, but...
I'm not a speed deamon and just be delighted to toodle around on a underpowered 1200cc Jet.
Any guidance appreciated!
Boroscope won't fit through the tiny plug hole, but got a view of piston top and it... was there, there is a top of the piston (at least within view of the spark plug hole)
Cam lobes looks pretty, no damage. Owner changed oil regularly.
It starts and runs. Other cylimders check good on compression.
Didn't hear anything clanking, like a valve bouncing on top piston, overall fires right up and sounds good.
It does die, but starts back up. Feels a whisker bad gas, injector clog maybe, and service paper mentioned bad gas (cause of original prob?)
Going to watch vids on engine removal and dig in accordingly.
Silly question- can it be run as is? As a 750 cc?
unplug #3 injector and send it?I can't imagine doing a rebuild and not going all in, but...
I'm not a speed deamon and just be delighted to toodle around on a underpowered 1200cc Jet.
Any guidance appreciated!
