Stefinstein
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Mad Scientist
Posts: 46
Vancouver
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Ok so I had a bit of a weather window to do some carb work yesterday and came out of it with a bit more insite.
150 main (brass washer is there), 52.5 pilot (I also have a 50 and a 55), half spacer mod, Float doesn't leak (drowned it in gas for 5 minutes), valve pin and valve body seat are clean and immaculate, valve body Oring replaced just in case, float height set at at highest spec or lowest fuel level which is up to the bowl bolt. Fuel level is consistent, doesn't creep. 100% not the bowl flooding.
After a minute or two of idle and choking again, I pulled the carb off to check the intake boot and bottom of carb to see if it was flooded, no pooling or major flooding, just wet. So this time around I took off the filter and managed to get a look down the barrel of the carb as I started and revved it, I see fuel bubbling. The main jet is splashing fuel around the needle at idle but when the throttle is opened the slide seems to be the culprit of the sputter/choking as it jerks up and down and pisses fuel from the main down the floor of the carb. When throttle is closed (even slowly from 1/8) the slide snaps shut rapidly causing the stall. This happened before I did the spacer mod and I did a thorough inspection of the diaphragm in the process and saw no issue there. Any thoughts?
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