dabernathy8181
Member
2000 GTI with the 717 and single carb. I pulled the carb to clean/rebuild about 3 weeks ago and have been chasing demons ever since.
The initial issue, if ski sat over night or longer periods of time it needed a bump of ether or a whole lot of cranking to get it to fire over. After initial startup it was good. If you shut it down after it warmed up it would start right up but would bog out of the hole initially and then it was fine again. So I finally decided to pull the carb.
It is nearly impossible to find genuine mikuni parts at the moment so a Vertex kit was recommended by my supplier. Surprisingly the carb was not super dirty. Little bit of krud in the usually places, cleaned all the internal components reassembled and to the water I went. After the initial startup I was pumped then 10 seconds later it fell on its face. No top speed max 20mph and was bogging down. I could pull a 1/4 choke and back on plane it went, full throttle, no bogging anywhere. Choke plate was closed 1/4-1/2 shut, hard to tell exact but if airflow was restricted it acts like it's suppose to. I have pulled the carb back apart 3 times now, first time making sure when I reassembled trash didn't get in somewhere. Second time I rechecked the popoff pressure. Third time I reinstalled all usable gaskets/springs/and diaphragms from pre-build. I did initially pull the accelerator pump apart when building to clean it out. Initial settings for the carb are 1 low and 0 high. 36/40 popoff. I replaced all the fuel lines when doing the rebuild to 1/4" auto line. I'm stumped, I didn't do anything other than remove and replace the carb. Any places where sealant should or shouldn't be placed to prevent air leaks. No mention of sealants in the shop manual I have.
Any help would be appreciated.
The initial issue, if ski sat over night or longer periods of time it needed a bump of ether or a whole lot of cranking to get it to fire over. After initial startup it was good. If you shut it down after it warmed up it would start right up but would bog out of the hole initially and then it was fine again. So I finally decided to pull the carb.
It is nearly impossible to find genuine mikuni parts at the moment so a Vertex kit was recommended by my supplier. Surprisingly the carb was not super dirty. Little bit of krud in the usually places, cleaned all the internal components reassembled and to the water I went. After the initial startup I was pumped then 10 seconds later it fell on its face. No top speed max 20mph and was bogging down. I could pull a 1/4 choke and back on plane it went, full throttle, no bogging anywhere. Choke plate was closed 1/4-1/2 shut, hard to tell exact but if airflow was restricted it acts like it's suppose to. I have pulled the carb back apart 3 times now, first time making sure when I reassembled trash didn't get in somewhere. Second time I rechecked the popoff pressure. Third time I reinstalled all usable gaskets/springs/and diaphragms from pre-build. I did initially pull the accelerator pump apart when building to clean it out. Initial settings for the carb are 1 low and 0 high. 36/40 popoff. I replaced all the fuel lines when doing the rebuild to 1/4" auto line. I'm stumped, I didn't do anything other than remove and replace the carb. Any places where sealant should or shouldn't be placed to prevent air leaks. No mention of sealants in the shop manual I have.
Any help would be appreciated.
