scott Posted October 14, 2015 Share Posted October 14, 2015 Hey guys. Got some Su idle problems. As u can hear the front one picks revs up and sounds cleaner when sync is held up to it but rear dies down and as u can see kills it. Also if i attempt to rev it, it just dies instantly. 72 3 screw su's (i think its correct) 2.5 turns out on mixture Atf oil in Su's idle's around 800 rpm Things i havent checked is fuel float bowl level vid here Quote Link to comment Share on other sites More sharing options...
neRok Posted October 14, 2015 Share Posted October 14, 2015 2.5 turns is not a tune, it's a ballpark starting point. I found this video a good help: scott 1 Quote Link to comment Share on other sites More sharing options...
1600dave Posted October 15, 2015 Share Posted October 15, 2015 Things i havent checked is fuel float bowl level Check this before you go any further - it is important in SU's Quote Link to comment Share on other sites More sharing options...
scott Posted October 15, 2015 Author Share Posted October 15, 2015 front rear Quote Link to comment Share on other sites More sharing options...
scott Posted October 15, 2015 Author Share Posted October 15, 2015 (edited) also should this have tension so it doesn't open and close so easly? The front had has tension and the rear doesn't https://www.youtube.com/watch?v=uOKAoisi0eg Edited October 15, 2015 by scott Quote Link to comment Share on other sites More sharing options...
Clockwork Posted October 16, 2015 Share Posted October 16, 2015 It looks like u may be having similar issues to me. If the car is dieing when you put the unisyn on the rear carb, then it is too rich (less air flow more fuel, flooding). Looking at your float levels, the rear is quite a bit higher than the front, also indicating flooding (fuel sitting in the jet too high). Try unscrewing the rear richness a bit. That last clip of the float thingy (very correct term...) could be the issue too though. From what I understand, fuel pump should regulate to give consistency between carbs, so one shouldn't get more fuel than the other, but if the pump is putting too much PSI through then it CAN just affect one carb (I'm not sure if a blockage can do the same thing? Maybe blocking off the front forcing more fuel to the rear?) Quote Link to comment Share on other sites More sharing options...
scott Posted October 17, 2015 Author Share Posted October 17, 2015 Turns out i was a tooth out on my oil drive to dizzy. runs perfect now gav240z 1 Quote Link to comment Share on other sites More sharing options...
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