- Location
- Cicero Indiana
Greetings -
I purchased a 2008 superjet from a fellow forum member - it is stock except for a B-pipe, jetted and T-adjusters on the carb. It was basically in perfect shape but now that it is getting warmer out it just isn't running right and in some cases it just won't restart after it is warm. One of the problems I have is that the engine appears to be running hotter then I expect (cylinder/head, not so much the pipe). Anyway, I can run the ski hard for appx. 20 to 30 minutes and if I have to restart it, well, it just starts real quick then bogs and dies. I can immediately pull the choke and it starts but then dies again. After that it won't run for sometime.
My current theory is that perhaps I have vapor lock as I have pulled the plugs and they are pretty dry at this point. Great spark, but pretty dry. They don't look too light brown in color (ie. too lean) but they aren't black either. So, could I have a situation where the ski is heating up and the fuel is basically getting cooked?
There are other things that I have noticed - he ran a different premix oil then I use, and when I took the screens out of the top of the carb they feel as if they are almost oily/sticky. I am going to pull the carbs and check them just to make sure nothing is gummed up, but like I said this issue of not starting after running for 20/30 mins is very repeatable. I don't think the head temp sensor is doing it, but I just don't know.
Thoughts? I appreciate any help!
DaveR
I purchased a 2008 superjet from a fellow forum member - it is stock except for a B-pipe, jetted and T-adjusters on the carb. It was basically in perfect shape but now that it is getting warmer out it just isn't running right and in some cases it just won't restart after it is warm. One of the problems I have is that the engine appears to be running hotter then I expect (cylinder/head, not so much the pipe). Anyway, I can run the ski hard for appx. 20 to 30 minutes and if I have to restart it, well, it just starts real quick then bogs and dies. I can immediately pull the choke and it starts but then dies again. After that it won't run for sometime.
My current theory is that perhaps I have vapor lock as I have pulled the plugs and they are pretty dry at this point. Great spark, but pretty dry. They don't look too light brown in color (ie. too lean) but they aren't black either. So, could I have a situation where the ski is heating up and the fuel is basically getting cooked?
There are other things that I have noticed - he ran a different premix oil then I use, and when I took the screens out of the top of the carb they feel as if they are almost oily/sticky. I am going to pull the carbs and check them just to make sure nothing is gummed up, but like I said this issue of not starting after running for 20/30 mins is very repeatable. I don't think the head temp sensor is doing it, but I just don't know.
Thoughts? I appreciate any help!
DaveR