14-08-2022, 04:09 PM
(This post was last modified: 14-08-2022, 04:11 PM by Reckless Rat.)
Steve, this sounds like the same carb I have on my RP - it's an SU H1. As an experiment, take the dashpot off and drain out the oil from the piston's reservoir. Remove the blue spring, you don't need it on this model. The weight of the piston is sufficient
Replace the dashpot and make sure that the jet is centred and the piston can rise and fall without sticking.
Try it dry of oil ( 3 in 1 is OK, nothing thicker) and if the piston rises too quickly add a drop or two. Don't use too much as the low vacuum of an A7 may not be enough to fully lift the piston and the oil damper will not help.
Replace the dashpot and make sure that the jet is centred and the piston can rise and fall without sticking.
Try it dry of oil ( 3 in 1 is OK, nothing thicker) and if the piston rises too quickly add a drop or two. Don't use too much as the low vacuum of an A7 may not be enough to fully lift the piston and the oil damper will not help.