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Just got this 72 attex superchief. Ran rough and wouldn't idle when I got it, tuned it up after that it ran great just like I would think it should but only lasted for 2 days with roughly 2hrs run time and than it started bogging, not idling, would require excessive choking (sometimes) it also seemed like it would run 10x better when first started up but only last a couple minutes of riding and the problems would only arise or worsen once the engine fully warmed up. Since then I've not been able to get it running right. Currently trying to solve some sort of fuel /fuel pulse pump issue. Currently not getting any fuel to the carb even with a brand new exact replacement pump. The compression in both cylinders is 125ps(supposed to be about 147psi at my elevation) with engine cold although I noticed one cylinder is getting a lot more fuel than the other. I'm guessing the reeds are pretty shot and probably falling apart and causing that but first I need to get fuel back to the carb to get her running. Tomorrow I am going to replace all the fuel lines with new proper fuel line and filter with fingers crossed that will solve the no fuel problem. Otherwise I'm already starting to dread the infamous leaky crank seals. I plan on testing that by spraying a little ether around each side of the crankcase to see if the idle surges. This motor is fun and pretty fast but I've definitely come to realize how difficult it is to find any parts or information on this chaparral g50b motor.
Any insight to these problems or references that may help out would be really appreciated.
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