Project Fat Nikki

cshaw07 · 05-07-2012, 09:52 AM

Check for a vac leak where the primary throttle shaft slides into the throttle body on the linkage side of the carb. My sterling had a nasty leak there. There is a write up of mine stickied on 7club on how to fix that with an o-ring if you find a leak there.

I had the same problems with my carb when I got it. High idle, would stall when coming to a stop, under 1,800 RPM it would buck bad. Had to really know how to drive it to make it work right. I was at DGRR with the carb un-working lol For some reason too, my A/F screw has to be WAY WAY out but shes idling good now at about ~800RPM with 15in/vac at idle. Before it would do exactly what yours is doing, little to no vac under 1500RPM, but I used the third nipple from the left on the carb spacer.

t_g_farrell · 05-07-2012, 09:57 AM

Yeah I was going to check with some propane around the shafts. I remember
when I pulled the primary shaft out to cut it up it had some gooey stuff on the
shaft. I may try pushing some grease into it from both sides and see how that
works.

I won't get back to this until June, too much other stuff around the house to
deal with at the moment.

05-07-2012, 09:57 AM	#2
t_g_farrell Waffles - hmmm good Join Date: Aug 2008 Location: Huntersville, NC Posts: 757 Rep Power: 0	Yeah I was going to check with some propane around the shafts. I remember when I pulled the primary shaft out to cut it up it had some gooey stuff on the shaft. I may try pushing some grease into it from both sides and see how that works. I won't get back to this until June, too much other stuff around the house to deal with at the moment. __________________ 1980 GS stockport, Fat Nikki, RB Dual Facetfuel pumps, Holley regulator, RB Street port exhaust, 2GDFIS, MR2 MK I electric fans, 2G strut bar, relayed fans, lights and fuel pump, LEDs Project Fat Nikki Budget 12A rebuild Video setup < $30.00

05-07-2012, 09:52 AM	#1
cshaw07 The Newbie Join Date: May 2012 Posts: 12 Rep Power: 0	Check for a vac leak where the primary throttle shaft slides into the throttle body on the linkage side of the carb. My sterling had a nasty leak there. There is a write up of mine stickied on 7club on how to fix that with an o-ring if you find a leak there. I had the same problems with my carb when I got it. High idle, would stall when coming to a stop, under 1,800 RPM it would buck bad. Had to really know how to drive it to make it work right. I was at DGRR with the carb un-working lol For some reason too, my A/F screw has to be WAY WAY out but shes idling good now at about ~800RPM with 15in/vac at idle. Before it would do exactly what yours is doing, little to no vac under 1500RPM, but I used the third nipple from the left on the carb spacer.