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mgreen

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Posts posted by mgreen

  1. Your description doesn't make much sense but I'm going to try my best.  Let's assume that you have your throttle linkage set up right.  A common issue is the butterfly valves getting stuck so I would verify that those move with the linkage.  You can get some aquarium line or clear fuel line to see the gas going into your float bowls.  When I first fired up my 240z with an su carbed l28, there was a lot of dirt and varnish in the port in the bottom of the float bowl.  Putting some premium (detergent) gas in and using carb cleaner helped a lot.  And when you say it runs when you pick up the linkage, do you mean the piston inside the mouth of the carb?  That would signify to me that you are running extremely lean to where you aren't getting combustion.  Su's lift up when the engine pulls more air past them, which lets more gas through the needle and seat.  Like Miles said, use the adjusting nut at the bottom to tune it to get it running.  I would richen it.  Hope this helped you a little.

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