Join Date: Feb 2005
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I have a 96 sls 500 that i just finishied rebuilding carbs and flushing out a contaminated fuel system. After setting everything back to stock setting as far as the jets it does not quite run right.
Here are my questions
*Is the main jet adjustable? I dont see how since it was removed it gets screwed all the way back in
* My manual says to adjust the air screw 1.75 (this means screw it all the way in and back it out 1.75 turns correct?
* I did not touch or adjust throttle cables so the only adjustment is the air screw and idle screw on the carb?
This unit does run but i have never tunned a carb before and it defffinetly has to be adjusted. Starts right up and will idle. Bogs heavily when accelerating. Also 2 times the engine has ran up high rpm even though the throttle was closed? i could physically see the slides closed but the engine ran away and the only way i could stop it was to cover the air inlets.
Which leads me too my last question can you adjust carbs with airbox off. Does this not effect the air ratio once you put it back on?
I understand air/fuel ratio but carbs are pre my erra. Only thing i ever troubleshoot is fuel injected.