12-04-2024, 07:20 PM
Hi all,
With your input we have much improved the problem. Engine now runs and accelerates freely but with a slight stall early on. We changed the jet assembly and piston using the same needle. This enabled piston to "clunk" normally. Removed washers between jet assy and body of carb. Also found air leak between carb and manifold. Ignition timing critical as it doesn't have auto advance/ retard. We found that by manually advancing ignition by hand as we opened throttle and manually by hand retarding it as we reduced throttle all went well. We will replace the old manual advance/retard mechanism.Time to move on with the next challenge!!. Many thanks Martin
With your input we have much improved the problem. Engine now runs and accelerates freely but with a slight stall early on. We changed the jet assembly and piston using the same needle. This enabled piston to "clunk" normally. Removed washers between jet assy and body of carb. Also found air leak between carb and manifold. Ignition timing critical as it doesn't have auto advance/ retard. We found that by manually advancing ignition by hand as we opened throttle and manually by hand retarding it as we reduced throttle all went well. We will replace the old manual advance/retard mechanism.Time to move on with the next challenge!!. Many thanks Martin