Trying to bring a 95 Speedster back to life after 10 year rest
Compression test one motor at 200psi both cyl, other motor 210/150 also plenty of oil spewing
from spark plug holes. reinstalled old plugs.
Removed old gas put in fresh to test fire and determine carb condition.
Wouldn't fire, primed with a little gas in carbs and motor #1 fired but no idle. 3 or 4 tries. ng
Believing the fuel system need more time to prime and also to prove fuel pump condition,
I made a small reservoir filled with a cup of 24/1 mixed fuel, from it I ran a supply and return line to the fuel pump.
It started with choking and achieved idle for several seconds so I shut it down. Same case for both motors.
Decided should replace old motor oil with fresh, drained the tank and cleaned it, vac'd as much oil as possible
from all oil lines using a brake bleeder tool. Installed 5 quarts Penzoil Marine into clean tank. Two days later I decided
to keep the small reservoir in place with the two stroke fuel an run each motor extended time to allow the fuel injection
system to purge remaining old oil. I hooked up the garden hose and ran each motor 3 or 4 minutes. The next day I hooked up the fuel
lines to the carbs and started each motor ran about 5 min each with the garden hose tool. Let sit for a few minutes then attempt
to start again and motor would not fire. Decided to confirm compression and discovered it had dropped. Same for both
motors. Motor cylinder inspection confirmed gulling of cylinder walls.
Any Ideas where I went wrong?
Moving forward, is boring the cylinders and up sizing piston/rings enough or should other things be replaced??
Thanks for any advice you can provide.
Compression test one motor at 200psi both cyl, other motor 210/150 also plenty of oil spewing
from spark plug holes. reinstalled old plugs.
Removed old gas put in fresh to test fire and determine carb condition.
Wouldn't fire, primed with a little gas in carbs and motor #1 fired but no idle. 3 or 4 tries. ng
Believing the fuel system need more time to prime and also to prove fuel pump condition,
I made a small reservoir filled with a cup of 24/1 mixed fuel, from it I ran a supply and return line to the fuel pump.
It started with choking and achieved idle for several seconds so I shut it down. Same case for both motors.
Decided should replace old motor oil with fresh, drained the tank and cleaned it, vac'd as much oil as possible
from all oil lines using a brake bleeder tool. Installed 5 quarts Penzoil Marine into clean tank. Two days later I decided
to keep the small reservoir in place with the two stroke fuel an run each motor extended time to allow the fuel injection
system to purge remaining old oil. I hooked up the garden hose and ran each motor 3 or 4 minutes. The next day I hooked up the fuel
lines to the carbs and started each motor ran about 5 min each with the garden hose tool. Let sit for a few minutes then attempt
to start again and motor would not fire. Decided to confirm compression and discovered it had dropped. Same for both
motors. Motor cylinder inspection confirmed gulling of cylinder walls.
Any Ideas where I went wrong?
Moving forward, is boring the cylinders and up sizing piston/rings enough or should other things be replaced??
Thanks for any advice you can provide.
