ys 170 - shutting down
05-16-2012 | 04:35 AM
#26
RE: ys 170 - shutting down
Taylor
Iam not certain but I have had a simular problen with a two stroke set up. I worked a whole seson with that problem.
I found out that the leaning comes from the tank. I used a clunk and a brass pipe internal in the tank. At closer inspection i found some
black spots along the pipe wich was a bad seam. As soon as I raised the nose on the plane the pipe was drawing air hence the lean motor.
My suggestion is that you check this if you are using a brass pipe in your tank. A quick test is to replace the pipe with fuel tube to check it out.
Hope this solve it!
Regards
Iam not certain but I have had a simular problen with a two stroke set up. I worked a whole seson with that problem.
I found out that the leaning comes from the tank. I used a clunk and a brass pipe internal in the tank. At closer inspection i found some
black spots along the pipe wich was a bad seam. As soon as I raised the nose on the plane the pipe was drawing air hence the lean motor.
My suggestion is that you check this if you are using a brass pipe in your tank. A quick test is to replace the pipe with fuel tube to check it out.
Hope this solve it!
Regards
05-16-2012 | 11:48 AM
#27
Joined: Feb 2005
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From: oakland,
CA
RE: ys 170 - shutting down
>> i found that on 45 degree the engine slowing down, so i lean the pump as max to check when the engine speed up and then back a little bit as you mentiond and its looks correct now ,
but..
when i move the nose up to 90 degree its still immidiately slowing down and shutting down... errrrr
When you're at 90 degrees, you will be at least at half throttle and the engine should not be shutting down. The only time you will throttle back to idle is for stall turn, and only for a brief moment.
Check your throttle linkage to make sure there is no play at idle position - causing it to close the carb completely.
The only other thing I can suggest is to check all of your fuel lines, fuel filter to make sure there are no leaks or clogging. In addition, submerge the tank in water for pressure test.
but..
when i move the nose up to 90 degree its still immidiately slowing down and shutting down... errrrr
When you're at 90 degrees, you will be at least at half throttle and the engine should not be shutting down. The only time you will throttle back to idle is for stall turn, and only for a brief moment.
Check your throttle linkage to make sure there is no play at idle position - causing it to close the carb completely.
The only other thing I can suggest is to check all of your fuel lines, fuel filter to make sure there are no leaks or clogging. In addition, submerge the tank in water for pressure test.
