YS 63FZ Problem
 

I picked up a used YS 63FZ, and put it on my test stand today. After putting fuel in the tank, and turning it over several times by hand to pressurize the tank, I moved the throttle to an idle setting, hooked up the glow igniter, and by the time I went to spin the prop with my starter, fuel was running out of the carb. This is only my second YS engine (the other is a 91FZ), but I'm thinking it's a regulator problem. I released the tank pressure, poured the fuel out of the carb, and trying starting it, but raw fuel was spraying out of the exhaust.

Any suggestions?

Mike

RE: YS 63FZ Problem
 

Sounds like the regulator is not closing....either debris, trash, or a damaged part is keeping the regulator from closing.


Troy Newman
Team YS Performance

RE: YS 63FZ Problem
 

Troy,

Do you recommend taking the regulator apart and flushing? What's best to flush it with?...is Isopropyl alcohol ok?

Mike

RE: YS 63FZ Problem
 

flush it with clean filtered RAW fuel. That is what I use.

Troy

RE: YS 63FZ Problem
 

I'll give it a shot. Thanks!